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Fan WL, Huang SY, Yang XJ, Bintang Ilhami F, Chen JK, Cheng CC. Hydrogen-bonded cytosine-endowed supramolecular polymeric nanogels: Highly efficient cancer cell targeting and enhanced therapeutic efficacy. J Colloid Interface Sci 2024; 665:329-344. [PMID: 38531278 DOI: 10.1016/j.jcis.2024.03.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/10/2024] [Accepted: 03/23/2024] [Indexed: 03/28/2024]
Abstract
We demonstrate that cytosine moieties within physically cross-linked supramolecular polymers not only manipulate drug delivery and release, but also confer specific targeting of cancer cells to effectively enhance the safety and efficacy of chemotherapy-and thus hold significant potential as a new perspective for development of drug delivery systems. Herein, we successfully developed physically cross-linked supramolecular polymers (PECH-PEG-Cy) comprised of hydrogen-bonding cytosine pendant groups, hydrophilic poly(ethylene glycol) side chains, and a hydrophobic poly(epichlorohydrin) main chain. The polymers spontaneously self-assemble into a reversibly hydrogen-bonded network structure induced by cytosine and directly form spherical nanogels in aqueous solution. Nanogels with a high hydrogen-bond network density (i.e., a higher content of cytosine moieties) exhibit outstanding long-term structural stability in cell culture substrates containing serum, whereas nanogels with a relatively low hydrogen-bond network density cannot preserve their structural integrity. The nanogels also exhibit numerous unique physicochemical characteristics in aqueous solution, such as a desirable spherical size, high biocompatibility with normal and cancer cells, excellent drug encapsulation capacity, and controlled pH-responsive drug release properties. More importantly, in vitro experiments conclusively indicate the drug-loaded PECH-PEG-Cy nanogels can selectively induce cancer cell-specific apoptosis and cell death via cytosine receptor-mediated endocytosis, without significantly harming normal cells. In contrast, control drug-loaded PECH-PEG nanogels, which lack cytosine moieties in their structure, can only induce cell death in cancer cells through non-specific pathways, which significantly inhibits the induction of apoptosis. This work clearly demonstrates that the cytosine moieties in PECH-PEG-Cy nanogels confer selective affinity for the surface of cancer cells, which enhances their targeted cellular uptake, cytotoxicity, and subsequent induction of programmed cell death in cancer cells.
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Affiliation(s)
- Wen-Lu Fan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Shan-You Huang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Xiu-Jing Yang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Fasih Bintang Ilhami
- Department of Natural Science, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Surabaya 60231, Indonesia
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
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Belachew GB, Hu CC, Chang YY, Wang CF, Hung WS, Chen JK, Lai JY. An Eco-Friendly Manner to Prepare Superwetting Melamine Sponges with Switchable Wettability for the Separation of Oil/Water Mixtures and Emulsions. Polymers (Basel) 2024; 16:693. [PMID: 38475376 DOI: 10.3390/polym16050693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/01/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
Oil/water separation processes have garnered significant global attention due to the quick growth in industrial development, recurring chemical leakages, and oil spills. Hence, there is a significant demand for the development of inexpensive superwetting materials in an eco-friendly manner to separate oil/water mixtures and emulsions. In this study, a superwetting melamine sponge (SMS) with switchable wettabilities was prepared by modifying melamine sponge (MS) with sodium dodecanoate. The as-prepared SMS exhibited superhydrophobicity, superoleophilicity, underwater superoleophobicity, and underoil superhydrophobicity. The SMS can be utilized in treating both light and heavy oil/water mixtures through the prewetting process. It demonstrated fast permeation fluxes (reaching 108,600 L m-2 h-1 for a light oil/water mixture and 147,700 L m-2 h-1 for a heavy oil/water mixture) and exhibited good separation efficiency (exceeding 99.56%). The compressed SMS was employed in separating surfactant-stabilized water-in-oil emulsions (SWOEs), as well as surfactant-stabilized oil-in-water emulsions (SOWEs), giving high permeation fluxes (reaching 7210 and 5054 L m-2 h-1, respectively). The oil purity for SWOEs' filtrates surpassed 99.98 wt% and the separation efficiencies of SOWEs exceeded 98.84%. Owing to their remarkable capability for separating oil/water mixtures and emulsions, eco-friendly fabrication method, and feasibility for large-scale production, our SMS has a promising potential for practical applications.
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Affiliation(s)
- Guyita Berako Belachew
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Chien-Chieh Hu
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Yan-Yu Chang
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung 840, Taiwan
| | - Chih-Feng Wang
- Institute of Advanced Semiconductor Packaging and Testing, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Wei-Song Hung
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- R&D Center for Membrane Technology, Chung Yuan Christian University, Taoyuan 320, Taiwan
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 320, Taiwan
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Huang CY, Lin FY, Lu CH, Chen JK. Corrigendum to "Ultrafast absorption mechanism of oil-emulsified micelles onto ferrous absorbents with dielectrophoresis force in the presence of polarization" [J Hazard Mater 460 (2023) 132436]. J Hazard Mater 2024; 464:132601. [PMID: 37743218 DOI: 10.1016/j.jhazmat.2023.132601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Affiliation(s)
- Chun-Yao Huang
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC; Taipei Heart Institute, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, ROC; Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, 252, Wu-Hsing Street, Taipei 110, Taiwan, ROC; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, 250, Wu-Hsing Street, Taipei 110, Taiwan, ROC; Department of Biomedical Sciences and Engineering, National Central University, 300, Zhongda Road, Taoyuan City 320317, Taiwan, ROC
| | - Feng-Yen Lin
- Taipei Heart Institute, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, ROC; Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, 252, Wu-Hsing Street, Taipei 110, Taiwan, ROC
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung 40705, Taiwan, ROC; Ph.D. Program in Translational Medicine, and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC; Taipei Heart Institute, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, ROC.
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Huang CY, Lin FY, Lu CH, Chen JK. Ultrafast absorption mechanism of oil-emulsified micelles onto ferrous absorbents with dielectrophoresis force in the presence of polarization. J Hazard Mater 2023; 460:132436. [PMID: 37699264 DOI: 10.1016/j.jhazmat.2023.132436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 08/19/2023] [Accepted: 08/27/2023] [Indexed: 09/14/2023]
Abstract
Absorption and desorption rates were generally dependent on the concentration gradient from bulk to absorbents. A novel methodology based on a capacitor with an alternating electric field (AEF) is developed to accelerate the absorption and desorption rates with the frequency manipulation. Ferrous polystyrene microspheres (PISMs) are synthesized as absorbents, which could enhance the complex permittivities as well as dielectric properties. Theoretically, the attractive force and viscous force predominately determine the particle and micelles movement in the medium under an AEF. Oil-emulsified micelles (OEM) with various viscosities were selected as absorbates. Both the OEM and microspherical absorbents assembled through the external attractive force in the presence of the AEF. When the attractive force is equal to viscous force in the medium at the characteristic frequency, the optimal absorption rate could be obtained. The absorption rate constants of pseudo-first-order for OEMs under the polarization at 50 V and 120 kHz of frequency are ca. 10 times higher than that in absence of the polarization. The desorption rate as well as recycling efficiency could be also improved at 800 kHz. The ferrous PISMs with high complex permittivity prevented the damage from the AEF, which could be recycled 10 times of absorption and desorption with frequency manipulation under the AEF. Our methodology provides novel insights for ultrafast wastewater treatment.
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Affiliation(s)
- Chun-Yao Huang
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC; Taipei Heart Institute, 250 Wu-Hsing Street, Taipei Medical University, Taipei 110, Taiwan ROC; Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, 252, Wu-Hsing Street, Taipei 110, Taiwan ROC; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, 250, Wu-Hsing Street, Taipei 110, Taiwan ROC; Department of Biomedical Sciences and Engineering, National Central University, 300, Zhongda Road, Taoyuan City 320317, Taiwan ROC
| | - Feng-Yen Lin
- Taipei Heart Institute, 250 Wu-Hsing Street, Taipei Medical University, Taipei 110, Taiwan ROC; Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, 252, Wu-Hsing Street, Taipei 110, Taiwan ROC
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung 40705, Taiwan, ROC; Ph.D. Program in Translational Medicine, and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan, ROC.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan, ROC.
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Chen CW, Chen SH, Huang CF, Chen JK. Designable Poly(methacrylic Acid)/Silver Cluster Ring Arrays as Reflectance Spectroscopy-Based Biosensors for Label-Free Plague Diagnosis. Polymers (Basel) 2023; 15:polym15081919. [PMID: 37112066 PMCID: PMC10143817 DOI: 10.3390/polym15081919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
A hole array was fabricated via photolithography to wet the bottoms of holes using oxygen plasma. Amide-terminated silane, a water immiscible compound before hydrolysis, was evaporated for deposition on the plasma-treated hole template surface. The silane compound was hydrolyzed along the edges of circular sides of the hole bottom to form a ring of an initiator after halogenation. Poly(methacrylic acid) (PMAA) was grafted from the ring of the initiator to attract Ag clusters (AgCs) as AgC-PMAA hybrid ring (SPHR) arrays via alternate phase transition cycles. The SPHR arrays were modified with a Yersinia pestis antibody (abY) to detect the antigen of Yersinia pestis (agY) for plague diagnosis. The binding of the agY onto the abY-anchored SPHR array resulted in a geometrical change from a ring to a two-humped structure. The reflectance spectra could be used to analyze the AgC attachment and the agY binding onto the abY-anchored SPHR array. The linear range between the wavelength shift and agY concentration from 30 to 270 pg mL-1 was established to obtain the detection limit of ~12.3 pg mL-1. Our proposed method provides a novel pathway to efficiently fabricate a ring array with a scale of less than 100 nm, which demonstrates excellent performance in preclinical trials.
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Affiliation(s)
- Chih-Wei Chen
- Division of Neurosurgery, Department of Surgery, Chi Mei Medical Center, Tainan 710, Taiwan
- Department of Occupational Safety and Health, Institute of Industrial Safety and Disaster Prevention, College of Sustainable Environment, Chia Nan University of Pharmacy and Science, Tainan 717, Taiwan
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan
| | - Shih-Hsun Chen
- Department of Mechanical Engineering, National Yang Ming Chiao Tung University, No. 1001, Daxue Rd. East Dist., Hsinchu City 300093, Taiwan
| | - Chih-Feng Huang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan
| | - Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan
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Ngan VTT, Chiou PY, Ilhami FB, Bayle EA, Shieh YT, Chuang WT, Chen JK, Lai JY, Cheng CC. A CO 2-Responsive Imidazole-Functionalized Fluorescent Material Mediates Cancer Chemotherapy. Pharmaceutics 2023; 15:pharmaceutics15020354. [PMID: 36839677 PMCID: PMC9959563 DOI: 10.3390/pharmaceutics15020354] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023] Open
Abstract
We present a breakthrough in the synthesis and development of functional gas-responsive materials as highly potent anticancer agents suitable for applications in cancer treatment. Herein, we successfully synthesised a stimuli-responsive multifunctional material (I-R6G) consisting of a carbon dioxide (CO2)-sensitive imidazole moiety and spirolactam-containing conjugated rhodamine 6G (R6G) molecule. The resulting I-R6G is highly hydrophobic and non- or weakly fluorescent. Simple CO2 bubbling treatment induces hydrophobic I-R6G to completely dissolve in water and subsequently form self-assembled nanoparticles, which exhibit unique optical absorption and fluorescence behaviours in water and extremely low haemolytic ability against sheep red blood cells. Reversibility testing indicated that I-R6G undergoes reversible CO2/nitrogen (N2)-dependent stimulation in water, as its structural and physical properties can be reversibly and stably switched by alternating cycles of CO2 and N2 bubbling. Importantly, in vitro cellular assays clearly demonstrated that the CO2-protonated imidazole moiety promotes rapid internalisation of CO2-treated I-R6G into cancer cells, which subsequently induces massive levels of necrotic cell death. In contrast, CO2-treated I-R6G was not internalised and did not affect the viability of normal cells. Therefore, this newly created system may provide an innovative and efficient route to remarkably improve the selectivity, safety and efficacy of cancer treatment.
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Affiliation(s)
- Vo Thuy Thien Ngan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Po-Yen Chiou
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Fasih Bintang Ilhami
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Enyew Alemayehu Bayle
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Yeong-Tarng Shieh
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan
| | - Wei-Tsung Chuang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- R & D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32023, Taiwan
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Chungli, Taoyuan 32003, Taiwan
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Correspondence:
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Huang CY, Lin FY, Chang CJ, Lu CH, Chen JK. Performance Enhancement of Electrochemiluminescence with the Immunosensor Controlled Using Magnetized Masks for the Determination of Epithelial Cancer Biomarker EpCAM. Anal Chem 2023; 95:986-993. [PMID: 36580404 DOI: 10.1021/acs.analchem.2c03127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The performance of an electrochemiluminescence (ECL) immunosensor was improved with a particle gradient. SiO2-coated magnetic beads were adopted as nanocarriers for gradient manipulation and immobilized with the primary antibody. Cadmium telluride quantum dots were coated with a layer of protein G for conjugation and orientation of the secondary antibody as signal labels. ECL immunosensor gradients on the electrode were formed by magnetolithography (ML) with magnetized nickel masks of column and stripe arrays. The immunosensor generally aggregated as an island on the substrate, leading to a decrease of efficiency in the characteristic signals. Stripe arrays of magnetized nickel were designed to generate cylindrical magnetic flux on the substrate to improve the particle manipulation with the gradient. Various gradients of the sandwich-structured immunosensor substantially affected the electrochemical performance. Compared to the gradient-free immunosensor, the gradient of the immunosensor generated by ML using a 3 μm stripe array mask enhanced the ECL intensity ∼2.2 times. The results of quantification of epithelial cell adhesion molecules (EpCAM) with the gradient immunosensor showed a broad linear range (15-420 pg mL-1), a low limit of detection (5.5 pg mL-1), and high reliability for EpCAM-spiked serum samples, indicating that the immunosensor gradient substantially enhances the performance of the ECL assay.
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Affiliation(s)
- Chun-Yao Huang
- Taipei Heart Institute, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, ROC.,Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, 252, Wu-Hsing Street, Taipei 110, Taiwan, ROC.,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, 250, Wu-Hsing Street, Taipei 110, Taiwan, ROC.,Department of Biomedical Sciences and Engineering, National Central University, 300, Zhongda Road, Taoyuan City 320317, Taiwan, ROC.,Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC
| | - Feng-Yen Lin
- Taipei Heart Institute, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, ROC.,Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, 252, Wu-Hsing Street, Taipei 110, Taiwan, ROC.,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, 250, Wu-Hsing Street, Taipei 110, Taiwan, ROC
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung 40705, Taiwan, ROC.,Institute of Biomedical Sciences, Ph.D. Program in Translational Medicine, and Rong-Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung 940227, Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC
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Chen CW, Zeng XY, Cheng CC, Wang CF, Chen JK. LSPR Sensing of Epithelial Cell Adhesion Molecules through Sphere and Cavity Plasmons of a Composite Ring Array of Poly[2-(dimethylamino)ethyl methacrylate]/Gold Nanoparticles. Anal Chem 2022; 94:17779-17786. [PMID: 36519823 DOI: 10.1021/acs.analchem.2c03149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Self-organization facilitates the formation of specific structures as a result of constituent interactions. In this study, the bottom of a 600 nm hole array photoresist template, which was deposited with a hydrophobic atom transfer radical polymerization (ATRP) initiator, was wetted by treatment with oxygen plasma. After the removal of the photoresist template, ring patterns of the ATRP initiator were formed at the interface between the hydrophobic and wetting regions. Poly[2-(dimethylamino)ethyl methacrylate] (PDMAEMA) was grafted from the ring array of the initiator to immobilize gold nanoparticles (AuNPs) as a uniform ring array on a silicon substrate via repeated swelling/shrinking cycles. The localized surface plasmon resonance (LSPR) peak of the PDMAEMA-AuNP hybrid ring (PAHR) red-shifted after 12 swelling/shrinking cycles. In comparison to gold nanoparticles, scalable gold nanorings can effectively develop a variety of nanostructures to design LSPR-based sensors and optimize the sensing accuracy and stability. To detect epithelial cell adhesion molecules (EpCAM) during the structural change from a ring to a disk, antiEpCAM was anchored onto the PAHR as a biosensor during swelling/shrinking. The coupling of antiEpCAM and EpCAM led to asymptotical convergence from rings to disks as well as blue shifts of the LSPR peaks. Linear correlation between the blue shift and EpCAM concentration showed a limit of detection of ∼27 pg mL-1 and a linear range of 25-200 pg mL-1 for the detection of EpCAM within 30 min. The simple method of combining lithography and plasma technology provides a versatile platform for developing the scalable ring structure of AuNPs for highly sensitive and selective biosensing.
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Affiliation(s)
- Chih-Wei Chen
- Division of Neurosurgery, Department of Surgery, Chi Mei Medical Center, Tainan710, Taiwan, ROC.,Department of Occupational Safety and Health/Institute of Industrial Safety and Disaster Prevention, College of Sustainable Environment, Chia Nan University of Pharmacy and Science, Tainan717, Taiwan, ROC.,Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei106, Taiwan, ROC
| | - Xiang-Yun Zeng
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei106, Taiwan, ROC
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei106, Taiwan, ROC
| | - Chih-Feng Wang
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei106, Taiwan, ROC
| | - Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei106, Taiwan, ROC
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Lin FY, Huang BR, Huang CY, Chen JK. Glucose-responsive nanogate of poly(methacrylic acid) brush-glucosamine network capping on the holes of chips for controlled insulin release. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wang CF, Huang XY, Lin HP, Chen JK, Tsai HC, Hung WS, Hu CC, Lai JY. Sustainable, biocompatible, and mass-producible superwetting water caltrop shell biochars for emulsion separations. J Hazard Mater 2022; 439:129567. [PMID: 36104894 DOI: 10.1016/j.jhazmat.2022.129567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/23/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
The separation of oily wastewater, specifically emulsions, is a crucial global issue. Possible strategies for the efficient separation of emulsified oil/water mixtures through sustainable and environmentally friendly materials have recently drawn considerable attention. In our study, we prepared superwetting water caltrop shell biochar (WCSB) via a top-lit-updraft carbonization procedure. The as-prepared WCSB was characterized by superhydrophilicity, underwater superoleophobicity, underoil superhydrophilicity, and underoil water adsorption ability. Because of its superwetting properties, WCSB was used for the separation of both surfactant-stabilized oil-in-water emulsions (SOIWEs) and surfactant-stabilized water-in-oil emulsions (SWIOEs) with very high fluxes (up to 74,700 and 241,000 L m-2 h-1 bar-1 for SOIWE and SWIOE, respectively). The separation performances were excellent, with oil contents in all SOIWE filtrates lower than 10 ppm and oil purities in all SWIOE filtrates higher than 99.99 wt%. Moreover, WCSB was applied to separate dye-spiked emulsions. Due to their high emulsion separation ability, sustainability, good biocompatibility, and ease of mass production, the as-prepared WCSBs have notable potential for utilitarian applications.
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Affiliation(s)
- Chih-Feng Wang
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Xin-Yu Huang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Hong-Ping Lin
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Wei-Song Hung
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Chien-Chieh Hu
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan; R&D Centre for Membrane Technology, Chung Yuan University, Taoyuan 320, Taiwan; Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 320, Taiwan
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Thankachan D, Anbazhagan R, Krishnamoorthi R, Tsai HC, Gebrie HT, Darge HF, Lu CH, Chen JK. MnO2 nanoparticle encapsulated in polyelectrolytic hybrids from alkyl functionalized carboxymethyl cellulose and azide functionalized gelatin to treat tumors by photodynamic therapy and photothermal therapy. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Chang CJ, Chao PY, Chen JK, Pundi A, Yu YH, Chiang CL, Lin YG. Metal Complex/ZnS-Modified Ni Foam as Magnetically Stirrable Photocatalysts: Roles of Redox Mediators and Carrier Dynamics Monitored by Operando Synchrotron X-ray Spectroscopy. ACS Appl Mater Interfaces 2022; 14:41870-41882. [PMID: 36001354 DOI: 10.1021/acsami.2c07857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Magnetically stirrable photocatalysts binding the ZnS-decorated Ni foam with the metal complex cocatalyst as a redox mediator and light-absorbing composition were investigated. Loading metal complex can improve light absorption, surface hydrophilicity, interfacial charge migration, and H2 production activity. The variation of the metal valences of the composite photocatalysts in an operando environment (with sacrificial agent solution) with and without light irradiation was investigated by X-ray absorption near-edge structure (XANES) spectra and Fourier-transformed extended X-ray absorption fine structure (EXAFS) spectra to monitor the charge carrier dynamics of photocatalysis and explain how the macrocyclic Cu complex (CuC) acted as a redox mediator better than the Ni complex. The smaller valence difference of copper valence in ZS/CuC for dark and light states revealed that the Cu complex facilitates a reversible electron transfer between the ZnS photocatalyst and H+. Loading the Cu complex can improve the separation of photogenerated carriers by the redox couple of complexes, leading to a significantly improved photocatalytic H2 production activity of 8150 μmol h-1 g-1. The reactants can flow through these magnetically stirrable Ni foam-based photocatalysts by magnetic-field-driven stirring, which improves the contact between photocatalysts and the sacrificial agents. The operando synchrotron provides new insights for understanding the roles of redox mediators.
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Affiliation(s)
- Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan
| | - Pei-Yao Chao
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan
| | - Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan
| | - Arul Pundi
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan
| | - Yuan-Hsiang Yu
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | - Chao-Lung Chiang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Yan-Gu Lin
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
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13
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Lee AW, Chang PL, Liaw SK, Lu CH, Chen JK. Inflammation-Responsive Nanovalves of Polymer-Conjugated Dextran on a Hole Array of Silicon Substrate for Controlled Antibiotic Release. Polymers (Basel) 2022; 14:polym14173611. [PMID: 36080686 PMCID: PMC9459923 DOI: 10.3390/polym14173611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 11/16/2022] Open
Abstract
Poly(methacrylic acid) (PMAA) brushes were tethered on a silicon surface possessing a 500-nm hole array via atom transfer radical polymerization after the modification of the halogen group. Dextran-biotin (DB) was sequentially immobilized on the PMAA chains to obtain a P(MAA-DB) brush surrounding the hole edges on the silicon surface. After loading antibiotics inside the holes, biphenyl-4,4′-diboronic acid (BDA) was used to cross-link the P(MAA-DB) chains through the formation of boronate esters to cap the hole and block the release of the antibiotics. The boronate esters were disassociated with reactive oxygen species (ROS) to open the holes and release the antibiotics, thus indicating a reversible association. The total amount of drug inside the chip was approximately 52.4 μg cm−2, which could be released at a rate of approximately 1.6 μg h−1 cm−2 at a ROS concentration of 10 nM. The P(MAA-DB) brush-modified chip was biocompatible without significant toxicity toward L929 cells during the antibiotic release. The inflammation-triggered antibiotic release system based on a subcutaneous implant chip not only exhibits excellent efficacy against bacteria but also excellent biocompatibility, recyclability, and sensitivity, which can be easily extended to other drug delivery systems for numerous biomedical applications without phagocytosis- and metabolism-related issues.
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Affiliation(s)
- Ai-Wei Lee
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 106, Taiwan
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Pao-Lung Chang
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 106, Taiwan
| | - Shien-Kuei Liaw
- Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung 40705, Taiwan
- Ph.D. Program in Translational Medicine, Institute of Biomedical Sciences, Rong-Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung 40227, Taiwan
- Correspondence: (C.-H.L.); (J.-K.C.); Tel.: +886-2-27376523 (J.-K.C.); Fax: +886-2-27376544 (J.-K.C.)
| | - Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Correspondence: (C.-H.L.); (J.-K.C.); Tel.: +886-2-27376523 (J.-K.C.); Fax: +886-2-27376544 (J.-K.C.)
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14
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Chou PC, Lin FP, Hsu HL, Chang CJ, Lu CH, Chen JK. Correction to Electrorheological Sensor Encapsulating Microsphere Media for Plague Diagnosis with Rapid Visualization. ACS Sens 2022; 7:1612. [PMID: 35475339 DOI: 10.1021/acssensors.2c00590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pai-Chien Chou
- Division of Pulmonary Medicine, Department of Internal Medicine, Taipei Medical University Hospital; Division of Thoracic Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 106, Taiwan
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Cai Z, Huang Y, Tang JH, Zhang R, Chen JK, Wang J, Ma YY. [Heparin-binding hemagglutinin as a composition antigen of tuberculosis vaccine exerts protective immune effects by inducing IL-17]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:370-376. [PMID: 35381662 DOI: 10.3760/cma.j.cn112150-20211206-01122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
To explore the protective immune effect induced by mucosal delivery heparin-binding hemagglutinin (HBHA)-a candidate vaccine antigen of Mycobacterium tuberculosis. Female C57BL/6 mice were between 6 and 8 weeks of age before experimental use. Thirty mice received different immunization strategies and were randomly divided into the control group, the early secreting antigen target-6 (ESAT-6) intranasal immunization group, the HBHA intranasal immunization group, the BCG priming PBS control group, or BCG priming HBHA boost group, 6 mice in each group. In order to analyzed the immune effect, the concentrations of plasma Interleukin-17A (IL-17A) and other cytokines were measured by ELISA. Quantitative real-time PCR analyses were performed to detect the relative quantity (RQ) mRNA of IL-17A in the lung. The lung tissue sections were stained to detect the formation of the tertiary lymphoid structures. The chemokines contributed to formation of the tertiary lymphoid structures were also measured. Flow cytometry was used to detect the frequency of Th1 and Th17 cells in the system. Sixty mice in the BCG priming PBS control group and the BCG priming HBHA boost group were sacrificed at different time points after infection to count the lung bacterial burden. The concentrations of plasma IL-17A and relative quantity of lung IL-17A mRNA were highest in the BCG priming HBHA boost group [(14.76±4.73) pg/mL,RQ (12.27±6.71)], which was significantly higher than the control group [(5.57±2.95) pg/mL,RQ (1.30±0.97)] (t=4.213, P<0.001; t=5.984, P<0.001), and also significantly higher than the BCG priming PBS control group [(6.81±2.18) pg/mL,RQ (1.44±1.16)] (t=3.646 P=0.001; t=6.185 P<0.001). Compared with the BCG priming PBS control group (0.38±0.38)% the frequency of spleen Th17 cells were also significantly increased (t=-0.280, P=0.048) in the BCG-primary HBHA boost group (1.02±0.34)%. In addition, HBHA boosting could promote better formation of the tertiary lymphoid structures in the lung, and decrease the bacterial load on the early stage after BCG challenge. Collectively, mucosal delivery of HBHA can effectively enhance the protective effect after BCG vaccination, and it is a potential candidate vaccine component.
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Affiliation(s)
- Z Cai
- Department of Clinical Laboratory, Air Force Medical Center, Beijing 100142, China
| | - Y Huang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - J H Tang
- Department of Clinical Laboratory, Air Force Medical Center, Beijing 100142, China
| | - R Zhang
- Department of Clinical Laboratory, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - J K Chen
- Department of Clinical Laboratory, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - J Wang
- Department of Clinical Laboratory, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y Y Ma
- Department of Clinical Laboratory, Air Force Medical Center, Beijing 100142, China
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Chen JK, Huang HY, Tu CW, Lee LT, Jamnongkan T, Huang CF. SI ATRP for the Surface Modifications of Optically Transparent Paper Films Made by TEMPO-Oxidized Cellulose Nanofibers. Polymers (Basel) 2022; 14:polym14050946. [PMID: 35267769 PMCID: PMC8912791 DOI: 10.3390/polym14050946] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 12/20/2022] Open
Abstract
Applications of cellulose nanofibers currently match the demands of biodegradable and renewable constituent biocomposites. In this study, we studied the process of preparing TEMPO-oxidized cellulose nanofibers (TOCNs). These nano-sized cellulose fibers (ca. 11 nm) can be fabricated to high transmittance and optically transparent paper (OP) films. Then the OP films can be facilely immobilized initiating sites for the subsequent surface-initiated atom transfer radical polymerization (SI ATRP). We investigated SI ATRP with styrene (St) kinetics and monitored chemical structure changes of the OP surfaces. The obtained OP-g-PSt significantly led to enhance thermal stability and alter the OP surface with hydrophobic compared to that of pristine OP film. Characterization was studied by Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), UV–Vis spectroscopy, thermogravimetric analyzer (TGA), and water contact angle (WCA) measurements.
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Affiliation(s)
- Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
| | - Hsiang-Ya Huang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan;
| | - Cheng-Wei Tu
- Industrial Technology Research Institute, Chutung, Hsinchu 31057, Taiwan;
| | - Li-Ting Lee
- Department of Materials Science and Engineering, Feng Chia University, Taichung 40724, Taiwan;
| | - Tongsai Jamnongkan
- Department of Fundamental Science and Physical Education, Faculty of Science at Sriracha, Kasetsart University, Bangkok 10900, Thailand
- Correspondence: (T.J.); (C.-F.H.)
| | - Chih-Feng Huang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan;
- Correspondence: (T.J.); (C.-F.H.)
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17
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Ke YF, Zhang YP, Chen JK, Chen H, Wang Y, Sun YC. [Accuracy analysis of full-arch implant digital impressions when using a geometric feature]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:162-167. [PMID: 35152652 DOI: 10.3760/cma.j.cn112144-20210519-00258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate the effect of adding a geometric feature on the accuracy of digital impressions obtained by intraoral scanners for implant restoration of edentulous jaw quantitatively. Methods: A dentiform model of the maxilla of completely edentulous arch with 6 implant analogs+scan bodies (No. 1-6) was selected as the reference model. Without geometric feature, the dentiform model was scanned by dental model scanner and repeated for 5 times as true value group. Before and after adding the geometric feature, the same operator used intraoral scanner A (Trios 3) and B (Aoralscan 2) to scan the dentiform model with the same scanning path. Each type of intraoral scanner scanned 10 times and ".stl " datas were obtained. The results were imported into reverse engineering software (Geomagic Studio 2015). The linear distances of center point of upper plane between sacn body 1 to 6 was calculated, denoted as D12, D13, D14, D15 and D16. Trueness was the absolute value subtracted from the measured value of the intraoral scanner groups and true value; precision was the absolute value of pairwise subtraction of the measured values in the intraoral scanner groups.The smaller the value, the better the accuracy or precision.With or without the feature, all scan data were statistically analyzed, and the effect of adding geometric feature on the trueness and precision of the two intraoral scanners were evaluated. Results: As for intraoral scanner A, with the feature in place, significant differences were found in D14, D15, D16 for tureness(t=2.66, 2.75, 2.95, P<0.05); the trueness for D16 decreased from (101.9±47.1) μm to (49.6±30.3) μm. On the other hand, with features on the edentulous area, the precision was significantly increased in D15 and D16 (U=378.00, 672.00, P<0.05); the precision for D15 decreased from 40.8 (45.1) μm to 13.1 (17.0) μm. As for intraoral scanner B, the trueness of D12, D13 and D14 after adding geometric features was significantly better than before (t=3.02, 2.66, U=22.00, P<0.05). With feature on the edentulous area, the trueness for D13 decreased from (116.6±41.2) μm to (70.8±35.5) μm. There was no statistical significance in the trueness of D15 and D16 with or without geometric feature (P>0.05), however, the precision of D15 and D16 after adding geometric feature was significantly better than before (U=702.00, 489.00,P<0.05). The precision of D16 decreased from 112.5 (124.7) μm to 35.9 (85.8) μm. Conclusions: The use of geometric feature in edentulous space improves the trueness and precision of the different principle intraoral scanners tested.
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Affiliation(s)
- Y F Ke
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y P Zhang
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J K Chen
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H Chen
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Wang
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y C Sun
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Chen JK, Lin FP, Chang CJ, Lu CH, Huang CF. Facile Molecular Weight Determination of Polymer Brushes Grafted from One-Dimensional Diffraction Grating by SI-ATRP Using Reflective Laser System. Polymers (Basel) 2021; 13:4270. [PMID: 34883771 PMCID: PMC8659917 DOI: 10.3390/polym13234270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/22/2021] [Accepted: 11/29/2021] [Indexed: 12/03/2022] Open
Abstract
Gelatin was immobilized selectively on the amide groups-modified bottom of a trench array of a photoresist template with 2 μm resolution by the ethyl(dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide reaction. The gelatin-immobilized line array was brominated to generate a macroinitiator for atom transfer radical polymerization. Poly(methacrylic acid) (PMAA) brushes were grafted from the macroinitiator layer as line arrays of one-dimensional diffraction gratings (DGs) for various grafting polymerization times. A laser beam system was employed to analyze the optical feature with a characteristic diffraction effect of the PMAA DGs at a 45° incident angle along the transverse magnetic and transverse electric polarization. The growth of the PMAA brush lines increased both their heights and widths, leading to a change in the reflective diffraction intensity. The PMAA brushes under various grafting polymerization times were cleaved from the substrate by digestion of gelatin with trypsin, and their molecular weights were obtained by gel permeation chromatography. The change degree of the diffraction intensity varied linearly with the molecular weight of the PMAA brushes over a wide range, from 135 to 1475 kDa, with high correlation coefficients. Molecular weight determination of polymer brushes using the reflective diffraction intensity provides a simple method to monitor their growth in real time without polymer brush cleavage.
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Affiliation(s)
- Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106335, Taiwan; (J.-K.C.); (F.-P.L.)
- R&D Center for Membrane Technology, Chung Yuan Christian University, Taoyuan 32043, Taiwan
| | - Feng-Ping Lin
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106335, Taiwan; (J.-K.C.); (F.-P.L.)
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Taichung 40724, Taiwan;
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung 40705, Taiwan
- Institute of Biomedical Sciences, Ph.D. Program in Translational Medicine, and Rong-Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung 40227, Taiwan
| | - Chih-Feng Huang
- i-Center for Advanced Science and Technology (iCAST), Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
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Ilhami FB, Yang YT, Lee AW, Chiao YH, Chen JK, Lee DJ, Lai JY, Cheng CC. Hydrogen Bond Strength-Mediated Self-Assembly of Supramolecular Nanogels for Selective and Effective Cancer Treatment. Biomacromolecules 2021; 22:4446-4457. [PMID: 34506111 DOI: 10.1021/acs.biomac.1c01022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study provides a significant contribution to the development of multiple hydrogen-bonded supramolecular nanocarrier systems by demonstrating that controlling the hydrogen bond strength within supramolecular polymers represents a crucial factor to tailor the drug delivery performance and enhance the effectiveness of cancer therapy. Herein, we successfully developed two kinds of poly(ethylene glycol)-based telechelic polymers Cy-PEG and UrCy-PEG having self-constituted double and quadruple hydrogen-bonding cytosine (Cy) and ureido-cytosine (UrCy) end-capped groups, respectively, which directly assemble into spherical nanogels with a number of interesting physical characteristics in aqueous solutions. The UrCy-PEG nanogels containing quadruple hydrogen-bonded UrCy dimers exhibited excellent long-term structural stability in a serum-containing biological medium, whereas the double hydrogen-bonded Cy moieties could not maintain the structural integrity of the Cy-PEG nanogels. More importantly, after the drug encapsulation process, a series of in vitro experiments clearly confirmed that drug-loaded UrCy-PEG nanogels induced selective apoptotic cell death in cancer cells without causing significant cytotoxicity to healthy cells, while drug-loaded Cy-PEG nanogels exerted nonselective cytotoxicity toward both cancer and normal cells, indicating that increasing the strength of hydrogen bonds in nanogels plays a key role in enhancing the selective cellular uptake and cytotoxicity of drugs and the subsequent induction of apoptosis in cancer cells.
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Affiliation(s)
- Fasih Bintang Ilhami
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Ya-Tang Yang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Ai-Wei Lee
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Hsuan Chiao
- Department of Chemical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32043, Taiwan
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
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Chen JK, Sun YC, Chen H, Cao Y, Ke YF, Zhou YS. [Quantitative study of intraoral scanners' accuracy]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:920-925. [PMID: 34496543 DOI: 10.3760/cma.j.cn112144-20210130-00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish a standard method to evaluate the scanning accuracy of intraoral scanner (IOS) and to investigate six IOS's scanning accuracy and the relationship between different scan span. Methods: Five simplified six abutments full arch model were fabricated by high accuracy (5 μm) milling machine with 7075 aluminum alloy. The machining accuracy, which was verified by a coordinate measuring machine with higher accuracy (0.7 μm), was considered as the reference accuracy. The model with the highest machining accuracy was considered as the test model in IOS's scanning accuracy test, and computer-aided design (CAD) data of the model was used as the reference data. Six IOS scanned the test model 10 times with the same scanning path, obtained 60 test data. CAD data and test data were input into Geomagic Studio 2014. The preparation part above the margin of the abutments of the data was isolated and divided into 4 segments of interest: single crown, three-unit bridge, five-unit bridge, and full arch. The test data were then best-fit aligned to CAD data or each other followed by deviation analysis. Scanning trueness and precision were then calculated. Results: The mid-value of scanning trueness and precision of six IOS in single crown, three-unit bridge, five-unit bridge and full arch were 13.3-29.6 μm and 7.6-20.7 μm, 15.4-30.9 μm and 8.7-26.5 μm, 17.0-66.1 μm and 11.3-44.2 μm, 24.0-107.9 μm and 24.6-150.1 μm respectively. Conclusions: Long-span scanning can affect the accuracy of IOS to a varying extent.
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Affiliation(s)
- J K Chen
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y C Sun
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H Chen
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Cao
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y F Ke
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y S Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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21
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Liao BY, Cheng CC, Wang CF, Lu CH, Chen JK. Performance enhancement by particle gradient assembly patterning of electrochemiluminescence immunosensor formed using magnetolithgraphy in determination of human serum albumin. Biosens Bioelectron 2021; 183:113240. [PMID: 33894484 DOI: 10.1016/j.bios.2021.113240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 11/30/2022]
Abstract
Gradient properties facilitate the correlation of chemical and physical features of particles on the structure and adherent fate. Herein, performance enhancement is explored by particle gradient assembly patterning (PGAP) formed with magnetic field gradient (MFG) by magnetolithography (ML) in the electrochemiluminescence (ECL) measurement. Magnetic Fe3O4 nanoparticles were selected as nanocarriers and coated with a SiO2 layer for immobilization of primary antibodies. CdTe quantum dots with protein G coatings were selected as signal labels and conjugated with secondary antibodies. Magnetized 500-nm pillar, 1 μm- and 3 μm-line arrays of nickel were placed behind the working electrode modifying the sandwich-structured ECL immunosensor to form various PGAPs. A performance enhancement of ca. 2.4 times was observed when comparing the PGAP-free immunosensor to the researched gradient immunosensor, formed with a magnetized 3 μm-line array of nickel. This concludes that the sensitivity of an ECL immunosensor has been enhanced due to PGAP properties. When the immunosensor with PGAP properties was used to quantify human serum albumin, it exhibited a wide linear range (10-480 ng/mL), and a limit of detection of 10 ng/mL. PGAP properties, formed with MFG by ML, provides a simple method to improve the ECL performance.
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Affiliation(s)
- Bao-Yu Liao
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei, 106, Taiwan, ROC
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Chih-Feng Wang
- Graduate Institute of Applied Science and Technology, Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung, 40705, Taiwan, ROC; Ph.D. Program in Translational Medicine, and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, 40227, Taiwan, ROC.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei, 106, Taiwan, ROC.
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22
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Chan WH, Srivastava R, Damaraju N, Do H, Burnett G, MacFarlane J, Xie SM, Chen JK, Honari G, Sarin KY. Automated detection of skin reactions in epicutaneous patch testing using machine learning. Br J Dermatol 2021; 185:456-458. [PMID: 33829497 DOI: 10.1111/bjd.20141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 11/29/2022]
Affiliation(s)
- W H Chan
- Dermatology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - R Srivastava
- Dermatology, Stanford University School of Medicine, Stanford, CA, USA
| | - N Damaraju
- Biomedical Informatics, Stanford University School of Medicine, Stanford, CA, USA
| | - H Do
- Dermatology, Stanford University School of Medicine, Stanford, CA, USA
| | - G Burnett
- Biomedical Informatics, Stanford University School of Medicine, Stanford, CA, USA
| | - J MacFarlane
- Biomedical Informatics, Stanford University School of Medicine, Stanford, CA, USA
| | - S M Xie
- Computer Science, Stanford University School of Medicine, Stanford, CA, USA
| | - J K Chen
- Dermatology, Stanford University School of Medicine, Stanford, CA, USA
| | - G Honari
- Dermatology, Stanford University School of Medicine, Stanford, CA, USA
| | - K Y Sarin
- Dermatology, Stanford University School of Medicine, Stanford, CA, USA
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23
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Pundi A, Chang CJ, Chen YS, Chen JK, Yeh JM, Zhuang CS, Lee MC. An aniline trimer-based multifunctional sensor for colorimetric Fe 3+, Cu 2+ and Ag + detection, and its complex for fluorescent sensing of L-tryptophan. Spectrochim Acta A Mol Biomol Spectrosc 2021; 247:119075. [PMID: 33096391 DOI: 10.1016/j.saa.2020.119075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/29/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
The detection of metal ions and amino acids by the aniline oligomer-based receptor has not been reported yet, to the best of our knowledge. In this study, an efficient multifunctional cation-amino acid sensor (CAS) with aniline moiety and chiral thiourea binding site was synthesized by the reaction of aniline trimer and (S)-(+)-1-phenyl ethyl isothiocyanate. CAS can sense Fe3+, Cu2+, Ag+ ions, and L-tryptophan. These results can be recognized by the naked eye. The appropriate pH range for the quantitative analysis of Fe3+, Cu2+, and Ag+ by CAS in DMSO/water (30 vol% water) was evaluated. The interaction between CCS and metal ions was analyzed by 1H NMR titration. The detection limits of CAS for the Cu2+, Ag+, and Fe3+ were 0.214, 0.099, and 0.147 μM, respectively. Moreover, the CASCu2+ complex can act as a turn-on fluorescence sensor for L-tryptophan. On the contrary, there is no response upon the addition of other amino acids, such as L-histidine, L-proline, L-phenylalanine, L-threonine, L-methionine, L-tyrosine, and L-cystine to CASCu2+ complex.
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Affiliation(s)
- Arul Pundi
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC.
| | - Yi-Shao Chen
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Rd, Taipei 106, Taiwan, ROC
| | - Jui-Ming Yeh
- Department of Chemistry, Chung-Yuan Christian University, Chung Li, Taoyuan County 32023, Taiwan, ROC
| | - Cai-Shan Zhuang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Ming-Ching Lee
- Department of Surgery, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Section 4, Taichung, 40705, Taiwan, ROC
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24
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Guo JW, Wang CF, Lai JY, Lu CH, Chen JK. Poly(N-isopropylacrylamide)-gelatin hydrogel membranes with thermo-tunable pores for water flux gating and protein separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118732] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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25
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Cheng CC, Lai YC, Shieh YT, Chang YH, Lee AW, Chen JK, Lee DJ, Lai JY. CO 2-Responsive Water-Soluble Conjugated Polymers for In Vitro and In Vivo Biological Imaging. Biomacromolecules 2020; 21:5282-5291. [PMID: 33155800 DOI: 10.1021/acs.biomac.0c01336] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Water-soluble conjugated polymers (WCPs) composed of a hydrophobic polythiophene main chain with hydrophilic tertiary amine side-chains can directly self-assemble into sphere-like nano-objects in an aqueous solution due to phase separation between the hydrophilic and hydrophobic segments of the polymeric structure. Due to the presence of gas-responsive tertiary amine moieties in the spherical structure, the resulting polymers rapidly and reversibly tune their structural features, surface charge, and fluorescence performance in response to alternating carbon dioxide (CO2) and nitrogen (N2) bubbling, which leads to significantly enhanced fluorescence and surface charge switching properties and a stable cycle of on and off switching response. In vitro studies confirmed that the CO2-treated polymers exhibited extremely low cytotoxicity and enhanced cellular uptake ability in normal and tumor cells, and thus possess significantly improved fluorescence stability, distribution, and endocytic uptake efficiency within cellular organisms compared to the pristine polymer. More importantly, in vivo assays demonstrated that the CO2-treated polymers displayed excellent biocompatibility and high fluorescence enhancement in living zebrafish, whereas the fluorescence intensity and stability of zebrafish incubated with the pristine polymer decreased linearly over time. Thus, these CO2 and N2-responsive WCPs could potentially be applied as multifunctional fluorescent probes for in vivo biological imaging.
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Affiliation(s)
- Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - You-Cheng Lai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Yeong-Tarng Shieh
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan
| | - Yi-Hsuan Chang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Ai-Wei Lee
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.,Cardiovascular Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan.,Taipei Heart Institute, Taipei Medical University, Taipei 11031, Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.,R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32043, Taiwan
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26
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Tu CW, Tsai FC, Chen JK, Wang HP, Lee RH, Zhang J, Chen T, Wang CC, Huang CF. Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles. Polymers (Basel) 2020; 12:E2835. [PMID: 33260522 PMCID: PMC7760924 DOI: 10.3390/polym12122835] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/24/2020] [Accepted: 11/26/2020] [Indexed: 11/17/2022] Open
Abstract
To afford an intact double network (sample abbr.: DN) hydrogel, two-step crosslinking reactions of poly(2-acrylamido-2-methylpropanesulfonic acid) (i.e., PAMPS first network) and then poly(acrylic acid) (i.e., PAA second network) were conducted both in the presence of crosslinker (N,N'-methylenebisacrylamide (MBAA)). Similar to the two-step processes, different contents of 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) oxidized cellulose nanofibers (TOCN: 1, 2, and 3 wt.%) were initially dispersed in the first network solutions and then crosslinked. The TOCN-containing PAMPS first networks subsequently soaked in AA and crosslinker and conducted the second network crosslinking reactions (TOCN was then abbreviated as T for DN samples). As the third step, various (T-)DN hydrogels were then treated with different concentrations of FeCl3(aq) solutions (5, 50, 100, and 200 mM). Through incorporations of ferric ions into (T-)DN hydrogels, notably, three purposes are targeted: (i) strengthen the (T-)DN hydrogels through ionic bonding, (ii) significantly render ionic conductivity of hydrogels, and (iii) serve as a catalyst for the forth step to proceed with in situ chemical oxidative polymerizations of pyrroles to afford polypyrrole-containing (sample abbr.: Py) hydrogels [i.e., (T-)Py-DN samples]. The characteristic functional groups of PAMPS, PAA, and Py were confirmed by FT-IR. Uniform microstructures were observed by cryo scanning electron microscopy (cryo-SEM). These results indicated that homogeneous composites of T-Py-DN hydrogels were obtained through the four-step process. All dry samples showed similar thermal degradation behaviors from the thermogravimetric analysis (TGA). The T2-Py5-DN sample (i.e., containing 2 wt.% TOCN with 5 mM FeCl3(aq) treatment) showed the best tensile strength and strain at breaking properties (i.e., σTb = 450 kPa and εTb = 106%). With the same compositions, a high conductivity of 3.34 × 10-3 S/cm was acquired. The tough T2-Py5-DN hydrogel displayed good conductive reversibility during several "stretching-and-releasing" cycles of 50-100-0%, demonstrating a promising candidate for bioelectronic or biomaterial applications.
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Affiliation(s)
- Cheng-Wei Tu
- Industrial Technology Research Institute, Chutung, Hsinchu 31057, Taiwan;
| | - Fang-Chang Tsai
- Hubei Key Laboratory of Polymer Materials, Key Laboratory for the Green Preparation and Application of Functional Materials (Ministry of Education), Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, School-Soaked of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
| | - Huei-Ping Wang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan; (H.-P.W.); (R.-H.L.)
| | - Rong-Ho Lee
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan; (H.-P.W.); (R.-H.L.)
| | - Jiawei Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (J.Z.); (T.C.)
| | - Tao Chen
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (J.Z.); (T.C.)
| | - Chung-Chi Wang
- Division of Cardiovascular Surgery, Veterans General Hospital, Taichung 40705, Taiwan;
| | - Chih-Feng Huang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, Taichung 40227, Taiwan; (H.-P.W.); (R.-H.L.)
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27
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Tsai FC, Huang CF, Lu CH, Chen JK. Cr(VI) visualization via transmittance of electrorheological display medium with core/shell polystyrene/polyvinyltetrazole microspheres. Sci Total Environ 2020; 743:140676. [PMID: 32653712 DOI: 10.1016/j.scitotenv.2020.140676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/30/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
In the course of time, significant amounts of heavy-ion pollutants have been dispersed into the environment. Rapid on-site detection of heavy metal ions is crucial to monitor their dispersion in the nascent stages. In this study, 2.2-μm-diameter polystyrene microspheres (PSM) were synthesized via emulsifier-free polymerization to coat polyacrylonitrile (PSM@PAN) and form core/shell-structured microspheres. Core/shell polystyrene/polyvinyltetrazole (PSM@PVT) microspheres were obtained after a cyano-to-tetrazole conversion reaction, loaded in an electrorheological device (ERD) display constructed using two indium tin oxide glasses with a spacer seal. The ERD loading dispersed the microsphere solution by scattering light through the ERD, resulting in a low transmittance in the absence of an alternating electric field (AEF). Particles in the fluid medium were polarized to induce negative and positive charges at each end of the particles under the AEF, and the resultant particle chains enhanced transmittance. The optimal frequency to generate the highest degree of particle chaining in the presence of an AEF is defined as its characteristic frequency (Fc), which also serves as an indicator to identify the shell materials. The Fc of PSM@PVT shifted from 350 kHz to 30 kHz after adsorbing Cr(VI) from the PVT coating. Transmittance of the ERD loading of PSM@PVT with Cr(VI) increased linearly with the concentration of Cr(VI). Approximately 40 ng mL-1 of the limit of detection was calculated in the linear range of 10-540 ng mL-1. The Fc of the PSM@PVT adsorbing the Cr(VI) was not influenced by Na(I), K(I), Ca(II), Mg(II), Fe(III), and Zn(II) coexisting in the ERD.
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Affiliation(s)
- Fang-Chang Tsai
- Hubei Key Laboratory of Polymer Materials, Key Laboratory for the Green Preparation and Application of Functional Materials (Ministry of Education), Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China; Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
| | - Chih-Feng Huang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung 40705, Taiwan; Ph. D. Program in Translational Medicine, Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung 40227, Taiwan.
| | - Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan; R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32043, Taiwan.
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28
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Chen GY, Chang CJ, Lu CH, Chen JK. Electrorheological display loading medium of core/shell polystyrene/polyvinyltetrazole microspheres for on-site visualization of lead(II). POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Chou PC, Lin FP, Hsu HL, Chang CJ, Lu CH, Chen JK. Electrorheological Sensor Encapsulating Microsphere Media for Plague Diagnosis with Rapid Visualization. ACS Sens 2020; 5:665-673. [PMID: 31869212 DOI: 10.1021/acssensors.9b01529] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Plague is a disease infected by an etiological agent, which is transmitted from fleas to a variety of wildlife rodents. Therefore, rapid diagnosis of plague on-site in the field is important. Polystyrene microspheres (SMs) of 2.2 μm diameter were synthesized by emulsion polymerization to adsorb magnetic nanoparticles (FNs), resulting in core-/shell-structured microspheres that generate a significant contrast in relative permittivities between SMs and FNs. Electrorheological displays (EDs) consisting of two indium tin oxide glasses with spacers were constructed to contain core-/shell-structured SM/FN (SM@FN) solutions for observing their transmittance change. The ED encapsulating dispersed SM@FN solution exhibited an opaque state because light was scattered significantly without the application of an alternating electric field (AEF). In the presence of an AEF, the particle chaining behavior results in enhancement of the transmittance of ED. At a specific frequency, the so-called characteristic frequency (Fc), the transmittance reaches a maximum. Fc could be used as an indicator to mark the shell materials. The antibody of Yersinia pestis (ab-Yp) was coated onto the SM@FN as a biosensing medium. The Fc of ab-Yp-modified microspheres shifted from 200 to 750 kHz with antigen coupling of Y. pestis antigen (ag-Yp). In the absence of fluorescence labeling, the large change in ED transmittance could be visualized during the Y. pestis detection. The limit of detection and the limit of quantification were ∼30 and ∼40 ng/μL, respectively, obtained within 30 s according to the highest transmittance of ED under the AEF at 750 kHz. Y. pestis detection was not affected by Escherichia coli and Staphylococcus aureus significantly. Compared with other common immunoassays, including the secondary immunochemical or enzyme-linked steps, this simple electrorheological sensor with high sensitivity and selectivity could be a candidate for on-site plague diagnosis.
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Affiliation(s)
- Pai-Chien Chou
- Department of Thoracic Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Republic of China
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, Republic of China
| | - Feng-Ping Lin
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, Republic of China
- Institute of Preventive Medicine, National Defense Medical Center, 161, Sec. 6, Minquan East Road, Neihu Dist., New Taipei City 114, Taiwan, ROC
| | - Hui-Ling Hsu
- Institute of Preventive Medicine, National Defense Medical Center, 161, Sec. 6, Minquan East Road, Neihu Dist., New Taipei City 114, Taiwan, ROC
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung 40705, Taiwan
- Department of Obstetrics and Gynecology, National Yang-Ming University School of Medicine, Taipei 112, Taiwan
| | - Jem-Kun Chen
- Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, Republic of China
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Bintang Ilhami F, Huang SY, Chen JK, Kao CY, Cheng CC. Multifunctional adenine-functionalized supramolecular micelles for highly selective and effective cancer chemotherapy. Polym Chem 2020. [DOI: 10.1039/c9py01557d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adenine-functionalized supramolecular micelles are rapidly endocytosed by cancer cells and enable selective induction of tumor cell death, without harming normal cells.
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Affiliation(s)
- Fasih Bintang Ilhami
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
- Graduate Institute of Biomedical Engineering
| | - Shan-You Huang
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Chen-Yu Kao
- Graduate Institute of Biomedical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
- Advanced Membrane Materials Research Center
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31
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Lin FP, Hsu HL, Chang CJ, Lee SC, Chen JK. Surface lattice resonance of line array of poly (glycidyl methacrylate) with CdS quantum dots for label-free biosensing. Colloids Surf B Biointerfaces 2019; 179:199-207. [PMID: 30959232 DOI: 10.1016/j.colsurfb.2019.03.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/21/2019] [Accepted: 03/31/2019] [Indexed: 11/25/2022]
Abstract
One dimensional plasmonic grating is a kind of resonant electromagnetic wave absorber with a characteristic wavelength. This study focusses on one-dimensional plasmonic grating consisting of poly (glycidyl methacrylate) (PGMA) brushes and CdS quantum dots (CdQDs) fabrication and PGMA chains grafted on a primary substrate in a line array continued by the immobilization of biotin-modified CdQDs. PGMA brush line array (PBLA) of plasmonic grating exhibited an absorptance at 441 nm while at the same time, CdQDs immobilized with PBLA showed characteristic absorbance at 396 nm. The blue-shift from 441 nm matches the absorbance peak of biotin-modified CdQDs resulting in the enhancement of photoluminescence emission of CdQDs. With streptavidin incubation to assemble CdQDs at 50 nM, the significant decrease in grating height resulted in the red-shift of the absorbance peak to 536 nm. Due to the deviation in absorbance, the intensity of the PL emission decreased gradually with the increase in concentration of streptavidin. In addition, our results showed that streptavidin incubation altered the color reflected from the surface due to effective changes in the refractive index of the layer as well. The limit of detection of the grating for streptavidin detection was determined to be 50 nM. Thus, PBLA-CdQD has the potential to act as a highly-sensitive, label-free optical biosensor.
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Affiliation(s)
- Feng-Ping Lin
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec 4, Keelung Rd., Taipei, 106, Taiwan, ROC; Institute of Preventive Medicine, National Defense Medical Center, 161, Sec. 6, Minquan E. Rd., Neihu Dist., New Taipei City, Taiwan, ROC
| | - Hui-Ling Hsu
- Institute of Preventive Medicine, National Defense Medical Center, 161, Sec. 6, Minquan E. Rd., Neihu Dist., New Taipei City, Taiwan, ROC
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung, 40724, Taiwan, ROC
| | - Sheng-Chi Lee
- Department of Orthopediac Surgery, Pingtung Branch, Kaohsiung Veterans General Hospital, 1, Anping Lane 1, Zhao Sheng Road, Neibu Township, Pingtung County, Taiwan, ROC.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec 4, Keelung Rd., Taipei, 106, Taiwan, ROC; Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan, ROC.
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32
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Li XF, Wang PF, Feng CL, Liu DQ, Chen JK, Wu FC. Acute Toxicity and Hazardous Concentrations of Zinc to Native Freshwater Organisms Under Different pH Values in China. Bull Environ Contam Toxicol 2019; 103:120-126. [PMID: 30250971 PMCID: PMC6647607 DOI: 10.1007/s00128-018-2441-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/06/2018] [Indexed: 05/14/2023]
Abstract
Zinc bioavailability to aquatic organisms varies greatly under different pH values. In the present study, five native species in China and four common international test species were selected to investigate the influence of changing pH on acute zinc toxicity. The results showed that the higher trophic levels exhibited increasing sensitivity to zinc as pH decreased. However, when the pH value was between 8 and 11, the acute toxicity of zinc was relatively constant. In addition, by using a species-sensitivity distribution (SSD) method, the short-term hazardous concentrations of zinc at different pH values (based on the 5th percentiles of the pH-specific SSDs) were determined to be 17.26 µg/L (pH 4), 48.31 µg/L (pH 5), 80.34 µg/L (pH 6) and 230.6 µg/L (pH 7), respectively. The present study provides useful information for deriving water quality criteria and assessing the risks of metals in the near future.
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Affiliation(s)
- X F Li
- College of Environment, Hohai University, Nanjing, China
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - P F Wang
- College of Environment, Hohai University, Nanjing, China
| | - C L Feng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China.
| | - D Q Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - J K Chen
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, China
| | - F C Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
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Huang YS, Chen JK, Kuo SW, Hsieh YA, Yamamoto S, Nakanishi J, Huang CF. Synthesis of Poly( N-vinylpyrrolidone)-Based Polymer Bottlebrushes by ATRPA and RAFT Polymerization: Toward Drug Delivery Application. Polymers (Basel) 2019; 11:E1079. [PMID: 31234554 PMCID: PMC6631111 DOI: 10.3390/polym11061079] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 01/29/2023] Open
Abstract
Atom transfer radical polyaddition (ATRPA) was utilized herein to synthesize a specific functional polyester. We conducted ATRPA of 4-vinylbenzyl 2-bromo-2-phenylacetate (VBBPA) inimer and successfully obtained a linear type poly(VBBPA) (PVBBPA) polyester with benzylic bromides along the backbone. To obtain a novel amphiphilic polymer bottlebrush, however, the lateral ATRP chain extension of PVBBPA with N-vinyl pyrrolidone (NVP) met the problem of quantitative dimerization. By replacing the bromides to xanthate moieties efficiently, we thus observed a pseudo linear first order reversible addition-fragmentation chain transfer (RAFT) polymerization to obtain novel poly(4-vinylbenzyl-2-phenylacetate)-g-poly(NVP) (PVBPA-g-PNVP) amphiphilic polymer bottlebrushes. The critical micelle concentration (CMC) and particle size of the amphiphilic polymer bottlebrushes were characterized by fluorescence spectroscopy, dynamic light scattering (DLS), and scanning electron microscopy (SEM) (CMCs < 0.5 mg/mL; particle sizes = ca. 100 nm). Toward drug delivery application, we examined release profiles using a model drug of Nile red at different pH environments (3, 5, and 7). Eventually, low cytotoxicity and well cell uptake of the Madin-Darby Canine Kidney Epithelial (MDCK) for the polymer bottlebrush micelles were demonstrated.
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Affiliation(s)
- Yi-Shen Huang
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Ya-An Hsieh
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
| | - Shota Yamamoto
- World Premier International Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Jun Nakanishi
- World Premier International Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Chih-Feng Huang
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
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Li M, Guo JW, Wen WQ, Chen JK. Biodegradable Redox-Sensitive Star Polymer Nanomicelles for Enhancing Doxorubicin Delivery. Nanomaterials (Basel) 2019; 9:E547. [PMID: 30987287 PMCID: PMC6523129 DOI: 10.3390/nano9040547] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 03/30/2019] [Accepted: 04/01/2019] [Indexed: 12/18/2022]
Abstract
A typical amphiphilic star polymer adamantane-[poly(lactic-co-glycolic acid)-bis(2-carboxyethyl) sulfide-poly(ethylene glycol) monomethyl ether)]₄ with a specific hydrophilic/redox-sensitive/hydrophobic structure was designed and synthesized through ring opening and esterification reactions. The self-assembled nanomicelles were used as doxorubicin (DOX) delivery vehicles with suitable critical micelle concentrations (5.0 mg/L). After the drug being loaded, drug-loaded micelles showed good drug-loading efficiency (10.39%), encapsulation efficiency (58.1%), and drug release (up to 60%) under simulated biological environment conditions. In addition, the backbone structure of the biodegradable polymer was easily hydrolyzed by the action of biological enzymes. As expected, cell-based studies showed that the designed polymer micelles possessed good biocompatibility (a survival rate of 85% for NH-3T3 cells). Moreover, the drug (DOX) still maintained good anti-cancer effects after being loaded, which caused 40% of MCF-7 cells to survive. These redox-sensitive micelles showed anti-tumor therapeutic potential.
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Affiliation(s)
- Meng Li
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
| | - Jian-Wei Guo
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Wei-Qiu Wen
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
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35
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Su SK, Lin FP, Huang CF, Lu CH, Chen JK. Coordination between Surface Lattice Resonances of Poly(glycidyl Methacrylate) Line Array and Surface Plasmon Resonances of CdS Quantum on Silicon Surface. Polymers (Basel) 2019; 11:polym11030558. [PMID: 30960542 PMCID: PMC6473753 DOI: 10.3390/polym11030558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/08/2019] [Accepted: 03/19/2019] [Indexed: 11/16/2022] Open
Abstract
In this work, a unique hybrid system is proposed for one-dimensional gratings comprising of poly(glycidyl methacrylate) (PGMA) brushes and CdS quantum dots (CQDs). Generally, the emission of QDs is too weak to be observed in a dry state. Plasmonic resonances of the grating structures can be used to enhance the light emission or absorption of CQDs. The interaction between PGMA plasmonic nanostructures and inorganic CQDs plays a crucial role in engineering the light harvest, notably for optoelectronic applications. Extinction measurements of the hybrid system consisting of a PGMA grating and CQDs are reported. We designed one-dimensional gratings with various resolutions to tune the absorptance peaks of grating. PGMA grating grafted from a 1.5 µm resolution of trench arrays of photoresist exhibited absorptance peak at 395 nm, close to the absorption peak of CQDs, resulting in the photoluminescence enhancement of CQDs on the grating due to high charge carriers’ recombination rate. Generally, the emission of quantum dots occurs under irradiation at characteristic wavelengths. Immobilizing QDs on the grating facilitates the emission of QDs under irradiation of full-wavelength light. Furthermore, the PGMA gratings with CQDs were immersed in various solvents to change the geometries resulting the shift of absorptance peak of grating. The proposed method could be applied for sensing the nature of the surrounding media and vice versa, as well as for various media of solvents.
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Affiliation(s)
- Shuenn-Kung Su
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Feng-Ping Lin
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Chih-Feng Huang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung 40705, Taiwan.
- Ph. D. Program in Translational Medicine, and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung 40227, Taiwan.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
- Taiwan Building Technology Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
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Madhusudhana Reddy P, Chang CJ, Chen JK, Huang CF, Chou CY, Lee MC. Polymer-coated gauze as efficient, reusable and economically viable adsorbents for the removal of Ni2+ ion. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Liu LP, Chen JK, Liu YM, Zhang DH, Zhang J, Yang XL. [Depletion of GP73 inhibits invasion and metastasis of hepatocellular carcinoma cells]. Zhonghua Zhong Liu Za Zhi 2018; 39:497-501. [PMID: 28728294 DOI: 10.3760/cma.j.issn.0253-3766.2017.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the in vitro and in vivo effect of GP73 on the proliferation, invasion and metastasis in hepatocellular carcinoma. Methods: GP73 gene was knocked out using CRISPR/Cas9 gene editing system in H22 and HepG2 cells, and stable knock out strains were constructed. The knockout efficiency was measured by western blot. Colony formation assay was used to detect the effect of GP73 on long-term survival ability. Cells were then highly synchronized in G(1) phase upon treatment with cell synchronization reagents (mimosine), and the percentage of cells in G(2)/M phase at different time points was detected by flow cytometry. The invasive and metastasis abilities of hepatocellular carcinoma cells were detected by Transwell™ assay. Furthermore, the tumor formation abilities in vivo were examined using subcutaneous xenograft models. Results: The stable knock out strains of GP73 in H22 and HepG2 cells were successfully established via puromycin selection. The number of colonies of GP73 knock out groups in HepG2 and H22 cells 10 days after transfection were 400±70 and 248±60, respectively. They were significantly lower than those in the control groups (980±40 and 1 100±50, respectively; P<0.01). In addition, GP73 knockout slowed down the cell cycle progression. Moreover, the cell numbers that had migrated to the underside of the filters were 312±50 and 305±49 in the GP73 knockout groups of HepG2 and H22 cells, respectively, significantly lower than 1 540±87 and 1 270±86 in the controls (P<0.01). For transwell invasion assay, the cell number that had invaded into the underside of the filters were 230±47 and 238±54 in the GP73 knockout groups of HepG2 and H22 cells, respectively, significantly lower than 648±74 and 596±63 in the controls(P<0.01). Furthermore, the tumor volume of GP73 knockout group was (70±170) mm(3,) significantly smaller than (1 200±110)mm(3) of the control guoup (P<0.01). Conclusions: GP73 knockout decreases the proliferation, invasive and migratory abilities of HepG2 and H22 cells in vitro and in vivo. GP73 may contribute to tumorigenesis of hepatocellular carcinoma.
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Affiliation(s)
- L P Liu
- Department of Clinical Laboratory, General Hospital of Armed Police Forces, Beijing 100039, China
| | - J K Chen
- Department of Clinical Laboratory, General Hospital of Armed Police Forces, Beijing 100039, China
| | - Y M Liu
- Department of Clinical Laboratory, General Hospital of Armed Police Forces, Beijing 100039, China
| | - D H Zhang
- Department of Clinical Laboratory, General Hospital of Armed Police Forces, Beijing 100039, China
| | - J Zhang
- Department of Clinical Laboratory, General Hospital of Armed Police Forces, Beijing 100039, China
| | - X L Yang
- Department of Clinical Laboratory, General Hospital of Armed Police Forces, Beijing 100039, China
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Manivannan K, Cheng CC, Anbazhagan R, Tsai HC, Chen JK. Fabrication of silver seeds and nanoparticle on core-shell Ag@SiO 2 nanohybrids for combined photothermal therapy and bioimaging. J Colloid Interface Sci 2018; 537:604-614. [PMID: 30472636 DOI: 10.1016/j.jcis.2018.11.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/31/2018] [Accepted: 11/12/2018] [Indexed: 01/02/2023]
Abstract
In this study, two core-shell nanohybrids of different morphologies, namely SiO2-coated silver (Ag) with surface-exposed silver seeds (Ag@SiO2@Agseed) and SiO2-coated Ag with surface-exposed Ag nanoparticles (Ag@SiO2@AgNPs), were fabricated using the Stober method. Potential applications in bioimaging and photothermal therapy (PTT) of the two fabricated nanohybrids were also explored. Upon exposure to visible light (400 nm), Ag@SiO2@Agseed with surface-exposed Ag seeds exhibited greater photothermal conversion efficiency than Ag@SiO2@AgNPs. In vitro MTT assays in the dark and subsequent bioimaging using HeLa cells proved the potential biocompatibility of the fabricated core-shell nanohybrids. PTT applications of the two fabricated core-shell nanohybrids were studied by incubating HeLa cells with the nanohybrids, exposure to 400 nm laser, and subsequent staining with annexin V and propidium iodide (PI), and the two core-shell nanohybrids gave distinctively different PI staining results. Interestingly, Ag@SiO2@Agseed caused higher cell death upon light exposure compared to Ag@SiO2@AgNPs as the former generated more heat within the cells. These results demonstrated potential bioimaging and PPT applications of the fabricated core-shell nanohybrids and offer a novel candidate for phototherapy-based biomedical applications.
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Affiliation(s)
- Karthikeyan Manivannan
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC; Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC; Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Rajeshkumar Anbazhagan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC; Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC; Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC; Applied Research Center for Thin-Film Metallic Glass, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; Advanced Membrane Materials Research Center, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
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39
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Sathesh V, Chen JK, Chang CJ, Aimi J, Chen ZC, Hsu YC, Huang YS, Huang CF. Synthesis of Poly(ε-caprolactone)-Based Miktoarm Star Copolymers through ROP, SA ATRC, and ATRP. Polymers (Basel) 2018; 10:E858. [PMID: 30960783 PMCID: PMC6403792 DOI: 10.3390/polym10080858] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 11/28/2022] Open
Abstract
The synthesis of novel branched/star copolymers which possess unique physical properties is highly desirable. Herein, a novel strategy was demonstrated to synthesize poly(ε-caprolactone) (PCL) based miktoarm star (μ-star) copolymers by combining ring-opening polymerization (ROP), styrenics-assisted atom transfer radical coupling (SA ATRC), and atom transfer radical polymerization (ATRP). From the analyses of gel permeation chromatography (GPC), proton nuclear magnetic resonance (¹H NMR), and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), well-defined PCL-μ-PSt (PSt: polystyrene), and PCL-μ-PtBA (PtBA: poly(tert-butyl acrylate) μ-star copolymers were successfully obtained. By using atomic force microscopy (AFM), interestingly, our preliminary examinations of the μ-star copolymers showed a spherical structure with diameters of ca. 250 and 45 nm, respectively. We successfully employed combinations of synthetic techniques including ROP, SA ATRC, and ATRP with high effectiveness to synthesize PCL-based μ-star copolymers.
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Affiliation(s)
- Venkatesan Sathesh
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43 Sec. 4, Keelung Road, Taipei 10607, Taiwan.
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100 Wenhwa Road, Seatwen District, Taichung 40724, Taiwan.
| | - Junko Aimi
- Molecular Design & Function Group, Research Center for Functional Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
| | - Zong-Cheng Chen
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan.
| | - Yu-Chih Hsu
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan.
| | - Yi-Shen Huang
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan.
| | - Chih-Feng Huang
- Department of Chemical Engineering, National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan.
- Research Center for Sustainable Energy and Nanotechnology, National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan.
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40
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Liao ZS, Huang SY, Huang JJ, Chen JK, Lee AW, Lai JY, Lee DJ, Cheng CC. Self-Assembled pH-Responsive Polymeric Micelles for Highly Efficient, Noncytotoxic Delivery of Doxorubicin Chemotherapy To Inhibit Macrophage Activation: In Vitro Investigation. Biomacromolecules 2018; 19:2772-2781. [PMID: 29677448 DOI: 10.1021/acs.biomac.8b00380] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Self-assembled pH-responsive polymeric micelles, a combination of hydrophilic poly(ethylene glycol) segments and hydrogen bonding interactions within a biocompatible polyurethane substrate, can spontaneously self-assemble into highly controlled, nanosized micelles in aqueous solution. These newly developed micelles exhibit excellent pH-responsive behavior and biocompatibility, highly controlled drug (doxorubicin; DOX) release behavior, and high drug encapsulation stability in different aqueous environments, making the micelles highly attractive potential candidates for safer, more effective drug delivery in applications such as cancer chemotherapy. In addition, in vitro cell studies revealed the drug-loaded micelles possessed excellent drug entrapment stability and low cytotoxicity toward macrophages under normal physiological conditions (pH 7.4, 37 °C). When the pH of the culture media was reduced to 6.0 to mimic the acidic tumor microenvironment, the drug-loaded micelles triggered rapid release of DOX within the cells, which induced potent antiproliferative and cytotoxic effects in vitro. Importantly, fluorescent imaging and flow cytometric analyses confirmed the DOX-loaded micelles were efficiently delivered into the cytoplasm of the cells via endocytosis and then subsequently gradually translocated into the nucleus. Therefore, these multifunctional micelles could serve as delivery vehicles for precise, effective, controlled drug release to prevent accumulation and activation of tumor-promoting tumor-associated macrophages in cancer tissues. Thus, this unique system may offer a potential route toward the practical realization of next-generation pH-responsive therapeutic delivery systems.
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Affiliation(s)
- Zhi-Sheng Liao
- Graduate Institute of Applied Science and Technology , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Shan-You Huang
- Graduate Institute of Applied Science and Technology , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Jyun-Jie Huang
- Graduate Institute of Applied Science and Technology , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Ai-Wei Lee
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine , Taipei Medical University , Taipei 11031 , Taiwan
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan.,Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan.,R&D Center for Membrane Technology , Chung Yuan Christian University , Chungli, Taoyuan 32043 , Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering , National Taiwan University , Taipei 10617 , Taiwan.,Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan.,R&D Center for Membrane Technology , Chung Yuan Christian University , Chungli, Taoyuan 32043 , Taiwan
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
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41
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Wen W, Guo J, Zhao X, Li X, Yang H, Chen JK. Synthesis of an Efficient S/N-Based Flame Retardant and Its Application in Polycarbonate. Polymers (Basel) 2018; 10:E441. [PMID: 30966476 PMCID: PMC6415229 DOI: 10.3390/polym10040441] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 11/16/2022] Open
Abstract
Considering the poor compatibility and water-resistance of sulfonate flame retardants for polycarbonate (PC), an efficient S/N-based flame retardant named 1,3,5,7-tetrakis(phenyl-4-sulfonyl-melamine)adamantane (ASN) has been developed. Fire properties studies of PC/ASN blends indicate that the addition of 0.10 wt % ASN imparts a V-0 rating and a limited oxygen index (LOI) value of 30.1% to PC specimens, and ASN can suppress the heat and toxic gas release of PC composites. Additionally, PC/ASN blends are believed to be exceptional materials for outdoor PC applications due to their superior water-resistance properties. Moreover, mechanical properties were further systematically investigated, and the correlative results indicate that the tensile strength and rigidity of specimens are improved with the addition of ASN.
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Affiliation(s)
- Weiqiu Wen
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
| | - Jianwei Guo
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Xi Zhao
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Xiong Li
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Hongmei Yang
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
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42
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Yang H, Guo J, Tong R, Yang C, Chen JK. pH-Sensitive Micelles Based on Star Copolymer Ad-(PCL-b-PDEAEMA-b-PPEGMA)₄ for Controlled Drug Delivery. Polymers (Basel) 2018; 10:E443. [PMID: 30966478 PMCID: PMC6415201 DOI: 10.3390/polym10040443] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/07/2018] [Accepted: 04/11/2018] [Indexed: 02/01/2023] Open
Abstract
Enhancing drug loading efficacy and stability of polymeric micelles remains a grand challenge. Here we develop adamantane-based star copolymers adamantane-[poly(ε-caprolactone)-b-poly(2-(diethylamino)ethyl methacrylate)-b-poly(poly(ethylene glycol) methyl ether methacrylate)]₄ (Ad-(PCL-b-PDEAEMA-b-PPEGMA)₄) and their self-assembled micelles for controlled drug delivery. Results show that the polymers have excellent stability in solution with low critical micelle concentration (CMC) (0.0025⁻0.0034 mg/mL) and the apparent base dissociation constant (pKb) of the polymers is from 5.31 to 6.05. Dynamic light scattering analysis exhibits the great environmental response capability of the pH-sensitive micelles according to particle sizes and zeta potentials. With the synergy effect of the adamantane and hydrophobic block, the micelles display the high Doxorubicin (DOX) loading efficacy (up to 22.4%). The DOX release study shows that the micelles are capable of controlled release for drug. This work indicates the Ad-(PCL-b-PDEAEMA-b-PPEGMA)₄ micelles may provide new guidelines for drug control and release system in overcoming cancer treatment.
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Affiliation(s)
- Huiyan Yang
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
| | - Jianwei Guo
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Rui Tong
- Guangzhou Tinci Materials Technology Co., Ltd., Guangzhou 510760, China.
| | - Chufen Yang
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan.
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Gebeyehu BT, Huang SY, Lee AW, Chen JK, Lai JY, Lee DJ, Cheng CC. Dual Stimuli-Responsive Nucleobase-Functionalized Polymeric Systems as Efficient Tools for Manipulating Micellar Self-Assembly Behavior. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02637] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | | | - Ai-Wei Lee
- Department
of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | | | - Juin-Yih Lai
- R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32043, Taiwan
| | - Duu-Jong Lee
- Department
of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32043, Taiwan
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Cao CC, Wang YG, Zhu L, Meng Y, Zhai XB, Dai YD, Chen JK, Pan FM. Local structure, nucleation sites and crystallization behavior and their effects on magnetic properties of Fe 81Si x B 10P 8-xCu 1 (x = 0~8). Sci Rep 2018; 8:1243. [PMID: 29352204 PMCID: PMC5775322 DOI: 10.1038/s41598-018-19665-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 01/05/2018] [Indexed: 11/09/2022] Open
Abstract
In this work, an attempt has been made to reveal critical factors dominating the crystallization and soft magnetic properties of Fe81Si x B10P8-xCu1 (x = 0, 2, 4, 6 and 8) alloys. Both melt spun and annealed alloys are characterized by differential scanning calorimetry, X-ray diffractometry, Mössbauer spectroscopy, transmission electron microscopy, positron annihilation lifetime spectroscopy and magnetometry. The changes in magnetic interaction between Fe atoms and chemical homogeneity can well explain the variation of magnetic properties of Fe81Si x B10P8-xCu1 amorphous alloys. The density of nucleation sites in the amorphous precursors decreases in the substitution of P by Si. Meanwhile, the precipitated nanograins gradually coarsen, but the inhibiting effect of P on grain growth diminishes causing the increase of the crystallinity. Moreover, various site occupancies of Si are observed in the nanocrystallites and the Si occupancy in bcc Fe decreases the average magnetic moment of nanograins. Without sacrificing amorphous forming ability, we can obtain FeSiBPCu nanocrystalline alloy with excellent soft magnetic properties by optimizing the content of Si and P in the amorphous precursors.
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Affiliation(s)
- C C Cao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
| | - Y G Wang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China.
| | - L Zhu
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
| | - Y Meng
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
| | - X B Zhai
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
| | - Y D Dai
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
| | - J K Chen
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
| | - F M Pan
- College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, P. R. China
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45
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Chen WT, Manivannan K, Yu CC, Chu JP, Chen JK. Fabrication of an artificial nanosucker device with a large area nanotube array of metallic glass. Nanoscale 2018; 10:1366-1375. [PMID: 29300061 DOI: 10.1039/c7nr07360g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The concurrent attachment and detachment movements of geckos on virtually any type of surface via their foot pads have inspired us to develop a thermal device with numerous arrangements of a multi-layer thin film together with electrodes that can help modify the temperature of the surface via application of a voltage. A sequential fabrication process was employed on a large-scale integration to generate well-defined contact hole arrays of photoresist for use as templates on the electrode-based device. The photoresist templates were then subjected to sputter deposition of the metallic glass Zr55Cu30Al10Ni5. Consequently, a metallic glass nanotube (MGNT) array having a nominal wall thickness of 100 nm was obtained after removal of the photoresist template. When a water droplet was placed on the MGNT array, close nanochambers of metallic glass were formed. By applying voltage, the surface was heated to increase the pressure inside the nanochambers; this generated an expanding force that raised the droplet; thus, the static water contact angle (SWCA) was increased. In contrast, a sucking force was generated during surface cooling, which decreased the SWCA. Our fabrication strategy exploits the MGNT array surface as nanosuckers, which can mimic the climbing aptitude of geckos as they attach to (>10 N m-2) and detach from (0.26 N m-2) surfaces at 0.5 and 3 V of applied voltage, respectively. Thus, the climbing aptitude of geckos can be mimicked by employing the processing strategy presented herein for the development of artificial foot pads.
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Affiliation(s)
- Wei-Ting Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan, Republic of China.
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Guo JW, Lin ZY, Huang BR, Lu CH, Chen JK. Antigen detection with thermosensitive hydrophilicity of poly(N-isopropylacrylamide)-grafted poly(vinyl chloride) fibrous mats. J Mater Chem B 2018; 6:3486-3496. [DOI: 10.1039/c8tb00870a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The static water contact angle of stimuli-responsive fibrous mats is used as a convenient index for rapid antigen detection.
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Affiliation(s)
- Jian-Wei Guo
- School of Chemical Engineering & Light Industry
- Guangdong University of Technology
- Guangzhou
- China
- Department of Materials Science and Engineering
| | - Zhen-Yu Lin
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Republic of China
| | - Bohr-Ran Huang
- Graduate Institute of Electro-Optical Engineering and Department of Electronic Engineering
- National Taiwan University of Science and Technology
- Taipei
- Republic of China
| | - Chien-Hsing Lu
- Department of Obstetrics and Gynecology
- Taichung Veterans General Hospital
- Taichung
- Taiwan
- Department of Obstetrics and Gynecology
| | - Jem-Kun Chen
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Republic of China
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Madhusudhana Reddy P, Hsieh SR, Chen JK, Chang CJ, Kang JY, Chen CH. Robust, sensitive and facile method for detection of F -, CN - and Ac - anions. Spectrochim Acta A Mol Biomol Spectrosc 2017; 186:8-16. [PMID: 28600993 DOI: 10.1016/j.saa.2017.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 05/23/2017] [Accepted: 06/05/2017] [Indexed: 06/07/2023]
Abstract
Sensing of F-, CN- and Ac- is important from the viewpoint of both medically and environmentally. Particularly, sensing of the anions in 100% water by a colorimetric chemical sensor is a highly difficult task as water molecules interfere the sensing mechanism. In this regard, sensor R1, having azo and nitrophenyl groups as signaling units and thiourea as a binding site was prepared. This sensor exclusively detected CN- ion over other testing anions in 30% aq. DMSO solution by exhibiting distinct spectral and visual color changes. However, in 15% aq. DMSO solution, R1 exhibited obvious spectral and color changes in response to F-, CN- and Ac-. On the other hand, we have also designed sensor, R2, having same signaling units of R1, but a different binding site of urea group. Surprisingly, in contrast to R1, R2 exhibited obvious spectral and color changes in 5% aq. DMSO solution only. Further, economically viable "test stripes" were prepared in a facile mode to detect the CN- in 100% aqueous solution. Such stripes can serve as a practical colorimetric probe for "in the field" detection of the ions and thus avoid additional expensive equipment.
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Affiliation(s)
- P Madhusudhana Reddy
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Shih-Rong Hsieh
- Department of Surgery, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Section 4, Taichung 40705, Taiwan, ROC
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec.4, Keelung Rd, Taipei 106, Taiwan, ROC
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC.
| | - Jing-Yuan Kang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
| | - Chih-Hsien Chen
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
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48
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Reddy PM, Hsieh SR, Chang CJ, Leong YY, Chen JK, Lee MC. Amplification of Hofmeister effect on poly( n -isopropylacrylamide) by crown ether. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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49
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Huang YS, Chen JK, Chen T, Huang CF. Synthesis of PNVP-Based Copolymers with Tunable Thermosensitivity by Sequential Reversible Addition⁻Fragmentation Chain Transfer Copolymerization and Ring-Opening Polymerization. Polymers (Basel) 2017; 9:E231. [PMID: 30970910 PMCID: PMC6431924 DOI: 10.3390/polym9060231] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 06/07/2017] [Accepted: 06/14/2017] [Indexed: 11/17/2022] Open
Abstract
Through the reversible addition⁻fragmentation chain transfer (RAFT) copolymerization of 3-ethyl-1-vinyl-2-pyrrolidone (C₂NVP) and N-vinylpyrrolidone (NVP), a series of well-defined P(C₂NVP-co-NVP) copolymers were synthesized (Mn = ca. 8000 to 16,000 and Mw/Mn <1.5) by using a difunctional chain transfer agent, S-(1-methyl-4-hydroxyethyl acetate) O-ethyl xanthate (MHEX). Copolymerizing kinetics and different monomer ratio in feeds were conducted to study the apparent monomer reaction rate and reactivity ratios of NVP and C₂NVP, which indicated similar reaction rates and predominantly ideal random copolymers for the two monomers. The Tgs of the obtaining P(C₂NVP-co-NVP) copolymers significantly corresponded to not only molecular weights MWs but also copolymer compositions. These copolymers presented characteristic lower critical solution temperatures (LCST) behavior. We then studied the cloud points (CPs) of the copolymers with varying MWs and compositions. With different MWs, the CPs were linearly decreased from ca. 51 to 45 °C. With different compositions, the CPs of the copolymers decreased from ca. 48 to 29 °C with C₂NVP content (i.e., from 60.8 to 89.9 mol %). Fitting the CPs by the theoretical equation, the result illustrated that the introduction of more hydrophobic units of C₂NVP suppressed the hydrophilic interaction between the polymer chain and water. We then successfully proceeded the chain extension through the ring-opening polymerization (ROP) of ε-caprolactone (CL) to the synthesis of a novel P(C₂NVP-co-NVP)-b-PCL amphiphilic block copolymer (Mn,NMR = 14,730 and Mw/Mn = 1.59). The critical micelle concentration (CMC) of the block copolymer had a value of ca. 1.46 × 10-4 g/L. The block copolymer micelle was traced by dynamic light scattering (DLS), obtaining thermosensitive behaviors with a particle size of ca. 240 nm at 25 °C and ca. 140 nm at 55 °C, respectively.
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Affiliation(s)
- Yi-Shen Huang
- Department of Chemical Engineering, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 40227, Taiwan.
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 10607, Taiwan.
| | - Tao Chen
- Department of Polymer and Composite, Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Zhongguan West Road 1219, Ningbo 315201, China.
| | - Chih-Feng Huang
- Department of Chemical Engineering, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 40227, Taiwan.
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50
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Zeng JR, Cheng CC, Lee AW, Wei PL, Chen JK. Visualization platform of one-dimensional gratings of tethered polyvinyltetrazole brushes on silicon surfaces for sensing of Cr(III). Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2294-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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