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Yeamsuksawat T, Zhu L, Kasuga T, Nogi M, Koga H. CO 2-laser-induced carbonization of calcium chloride-treated chitin nanopaper for applications in solar thermal heating. RSC Adv 2023; 13:17556-17564. [PMID: 37312995 PMCID: PMC10258603 DOI: 10.1039/d3ra03373b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 06/05/2023] [Indexed: 06/15/2023] Open
Abstract
Remarkable progress has been made in the development of carbonized chitin nanofiber materials for various functional applications, including solar thermal heating, owing to their N- and O-doped carbon structures and sustainable nature. Carbonization is a fascinating process for the functionalization of chitin nanofiber materials. However, conventional carbonization techniques require harmful reagents, high-temperature treatment, and time-consuming processes. Although CO2 laser irradiation has progressed as a facile and second-scale high-speed carbonization process, CO2-laser-carbonized chitin nanofiber materials and their applications have not yet been explored. Herein, we demonstrate the CO2-laser-induced carbonization of chitin nanofiber paper (denoted as chitin nanopaper) and investigate the solar thermal heating performance of the CO2-laser-carbonized chitin nanopaper. While the original chitin nanopaper was inevitably burned out by CO2 laser irradiation, CO2-laser-induced carbonization of the chitin nanopaper was achieved by pretreatment with calcium chloride as a combustion inhibitor. The CO2-laser-carbonized chitin nanopaper exhibits excellent solar thermal heating performance; its equilibrium surface temperature under 1 sun irradiation is 77.7 °C, which is higher than those of the commercial nanocarbon films and the conventionally carbonized bionanofiber papers. This study paves the way for the high-speed fabrication of carbonized chitin nanofiber materials and their application in solar thermal heating toward the effective utilization of solar energy as heat.
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Affiliation(s)
- Thanakorn Yeamsuksawat
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Luting Zhu
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Takaaki Kasuga
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Masaya Nogi
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
| | - Hirotaka Koga
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8444 +81-6-6879-8442
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2
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Lian X, Song C, Wang Y. Regulating the Oil-Water Interface to Construct Double Emulsions: Current Understanding and Their Biomedical Applications. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2019-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3
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Highly Porous SnO2/TiO2 Heterojunction Thin-Film Photocatalyst Using Gas-Flow Thermal Evaporation and Atomic Layer Deposition. Catalysts 2021. [DOI: 10.3390/catal11101144] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Highly porous heterojunction films of SnO2/TiO2 were prepared using gas-flow thermal evaporation followed by atomic layer deposition (ALD). Highly porous SnO2 was fabricated by introducing an inert gas, Ar, during thermal evaporation. To build heterogeneous structures, the TiO2 layers were conformally deposited on porous SnO2 with a range of 10 to 100 cycles by means of ALD. The photocatalytic properties for different TiO2 thicknesses on the porous SnO2 were compared using the degradation of methylene blue (MB) under UV irradiation. The comparisons showed that the SnO2/TiO2-50 heterostructures had the highest photocatalytic efficiency. It removed 99% of the MB concentration, and the decomposition rate constant (K) was 0.013 min−1, which was approximately ten times that of the porous SnO2. On the other hand, SnO2/TiO2-100 exhibited a lower photocatalytic efficiency despite having a TiO2 layer thicker than SnO2/TiO2-50. After 100 cycles of TiO2 ALD deposition, the structure was transferred from the heterojunction to the core–sell structure covered with TiO2 on the porous SnO2, which was confirmed by TEM analysis. Since the electrons photogenerated by light irradiation were separated into SnO2 and produced reactive oxygen, O2−, the heterojunction structure, in which SnO2 was exposed to the surface, contributed to the high performance of the photocatalyst.
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4
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Smart gating porous particles as new carriers for drug delivery. Adv Drug Deliv Rev 2021; 174:425-446. [PMID: 33930490 DOI: 10.1016/j.addr.2021.04.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/12/2021] [Accepted: 04/23/2021] [Indexed: 12/13/2022]
Abstract
The design of smart drug delivery carriers has recently attracted great attention in the biomedical field. Smart carriers can specifically respond to physical and chemical changes in their environment, such as temperature, photoirradiation, ultrasound, magnetic field, pH, redox species, and biomolecules. This review summarizes recent advances in the integration of porous particles and stimuli-responsive gatekeepers for effective drug delivery. Their unique structural properties play an important role in facilitating the diffusion of drug molecules and cell attachment. Various techniques for fabricating porous materials, with their major advantages and limitations, are summarized. Smart gatekeepers provide advanced functions such as "open-close" switching by functionalized stimuli-responsive polymers on a particle's pores. These controlled delivery systems enable drugs to be targeted at specific rates, time programs, and sites of the human body. The gate structures, gating mechanisms, and controlled release mechanisms of each trigger are detailed. Current ongoing research and future trends in targeted drug delivery, tissue engineering, and regenerative medicine applications are highlighted.
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5
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Affiliation(s)
- Yonglin He
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Shenglong Liao
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China Beijing 100872 China
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6
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Cheng H, Liu Q, Han S, Zhang S, Ouyang X, Wang X, Duan Z, Wei H, Zhang X, Ma N, Xue M. Highly Efficient Photothermal Conversion of Ti 3C 2T x/Ionic Liquid Gel Pen Ink for Smoothly Writing Ultrasensitive, Wide-Range Detecting, and Flexible Thermal Sensors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37637-37646. [PMID: 32705862 DOI: 10.1021/acsami.0c13215] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Photothermal conversion behavior has a vital application to disease therapy, water purification, or uncontacted heaters. The fabrication of high-performance photothermal conversion materials especially for near-infrared (NIR) light and microstructures has attracted a great deal of attention. Among numerous substances, MXene as a new type of 2D material with semi-metallic and unique electromagnetic properties presents a broader absorption of light and even a typical plasmonic absorption near the NIR-I area (808 nm), which has made it suitable for photothermal conversion. Here, we propose a facile approach for preparing a Ti3C2Tx/ionic liquid ink with a high photothermal conversion efficiency. The as-prepared ink has showed good wettability of various substrates as well as the high sensitivity of 808 nm NIR light irradiation and a wide range of thermal variation. After packing the ink into a gel pen refill, the flexible thermal chips could be easily obtained just by pen writing on the soft surface with the designed size, which also have become an optimal candidate for the thermal alarm system.
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Affiliation(s)
- Haoge Cheng
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Qiongxia Liu
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Shengpeng Han
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Shuai Zhang
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Xiao Ouyang
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Xun Wang
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Zhilong Duan
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Hao Wei
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Xinyue Zhang
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Ning Ma
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Mianqi Xue
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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7
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Tuning thermodynamic properties of deep eutectic solvents for achieving highly efficient photothermal sensor. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Kumar S, Nehra M, Kedia D, Dilbaghi N, Tankeshwar K, Kim KH. Nanotechnology-based biomaterials for orthopaedic applications: Recent advances and future prospects. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 106:110154. [DOI: 10.1016/j.msec.2019.110154] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 08/04/2019] [Accepted: 08/31/2019] [Indexed: 12/13/2022]
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9
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Wang Z, Lian X, Li R, Tao X, Wang Y. An Intrinsic Photothermal Liquid for Light Detection and Energy Storage. Chemistry 2019; 25:13811-13815. [DOI: 10.1002/chem.201903198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Zhen Wang
- Department of ChemistryRenmin University of China Beijing 100872 P. R. China
| | - Xiaodong Lian
- Department of ChemistryRenmin University of China Beijing 100872 P. R. China
| | - Ruiting Li
- Department of ChemistryRenmin University of China Beijing 100872 P. R. China
| | - Xinglei Tao
- Department of ChemistryRenmin University of China Beijing 100872 P. R. China
| | - Yapei Wang
- Department of ChemistryRenmin University of China Beijing 100872 P. R. China
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10
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Pan Q, Zhang S, Li R, He Y, Wang Y. A low-cost and reusable photothermal membrane for solar-light induced anti-bacterial regulation. J Mater Chem B 2019. [DOI: 10.1039/c9tb00260j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this work, a simple, low-cost, and applicable strategy for preparing membranes which allow photothermal conversion and have excellent anti-bacterial ability is proposed.
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Affiliation(s)
- Qianhao Pan
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Shiming Zhang
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Ruiting Li
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Yonglin He
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Yapei Wang
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
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11
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Li R, Lian X, Wang Z, Wang Y. Radical Cation Initiated Surface Polymerization on Photothermal Rubber for Smart Antifouling Coatings. Chemistry 2018; 25:183-188. [PMID: 30325541 DOI: 10.1002/chem.201804526] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Indexed: 12/13/2022]
Abstract
Biofouling on surfaces of various materials has attracted considerable attention in biomedical and marine industries. Surface grafting based on covalent surface-initiated polymerization offers a popular route to address this problem by providing diverse robust polymer coatings capable of preventing the biofouling in complex environments. However, the existing methods for synthesizing polymer coatings are complicated and rigorous, or require special catalysts, greatly limiting their practical applications. In this work, a radical-cation-based surface-initiated polymerization protocol to graft the surface of darkened trans-polyisoprene (TPI) rubber with a thermo-responsive smart polymer, poly(N-isopropylacrylamide) (PNIPAM), through a simple iodine doping process is reported. A series of characterizations were performed to provide adequate evidence to confirm the successful grafting. Combining the thermal sensitivity of PNIPAM with the photothermal conversion ability of the darkened rubber, efficient bacteria-killing and antifouling capabilities were successfully achieved as a result of temperature-controlled iodine release and switchable amphiphilicity of PNIPAM.
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Affiliation(s)
- Ruiting Li
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Xiaodong Lian
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Zhen Wang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
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12
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Neelgund GM, Oki A. Photothermal effect of Ag nanoparticles deposited over poly(amidoamine) grafted carbon nanotubes. J Photochem Photobiol A Chem 2018; 364:309-315. [PMID: 31031549 PMCID: PMC6484833 DOI: 10.1016/j.jphotochem.2018.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This paper illustrates the potential of Ag nanoparticles based nanocomposites to use as effective agents in photothermal therapy apart from their traditional employment as antimicrobial materials. Herein an Near- Infrared active photothermal agent was fabricated by deposition of Ag nanoparticles over aromatic poly(amidoamine) grafted carbon nanotubes. Thus prepared CNTs-PAMAM-Ag possessed strong photothermal effect under exposure to 980 nm laser system and prominent photothermal stability. The photothermal conversion efficiency of CNTs-PAMAM-Ag was found to be higher than readily used Au and CuS based photothermal agents. The photothermal effect of CNTs-PAMAM-Ag was substantial in presence of 980 nm laser compared to 808 nm laser and a linear dependence of photothermal effect on its concentration was identified. The maximum temperature attained by CNTs-PAMAM-Ag during assessment of its photothermal effect was about 66.0 °C, which is significantly higher than the survival temperature level of cancer cells. So CNTs-PAMAM-Ag could be a promising photothermal agent to apply in future photothermal hyperthermia therapy to treat cancer. Moreover CNTs-PAMAM-Ag can synchronous trigger by a single wavelength (980 nm) laser system, so it could simplify the future therapeutic process.
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Affiliation(s)
- Gururaj M. Neelgund
- Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, United States
| | - Aderemi Oki
- Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, United States
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13
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Wang Z, Liao S, Wang Y. Supramolecular Polymer Emulsifiers for One-step Complex Emulsions. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-018-2084-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Zhang J, Zheng T, Alarçin E, Byambaa B, Guan X, Ding J, Zhang YS, Li Z. Porous Electrospun Fibers with Self-Sealing Functionality: An Enabling Strategy for Trapping Biomacromolecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:10.1002/smll.201701949. [PMID: 29094479 PMCID: PMC5845855 DOI: 10.1002/smll.201701949] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/25/2017] [Indexed: 05/30/2023]
Abstract
Stimuli-responsive porous polymer materials have promising biomedical application due to their ability to trap and release biomacromolecules. In this work, a class of highly porous electrospun fibers is designed using polylactide as the polymer matrix and poly(ethylene oxide) as a porogen. Carbon nanotubes (CNTs) with different concentrations are further impregnated onto the fibers to achieve self-sealing functionality induced by photothermal conversion upon light irradiation. The fibers with 0.4 mg mL-1 of CNTs exhibit the optimum encapsulation efficiency of model biomacromolecules such as dextran, bovine serum albumin, and nucleic acids, although their photothermal conversion ability is slightly lower than the fibers with 0.8 mg mL-1 of CNTs. Interestingly, reversible reopening of the surface pores is accomplished with the degradation of PLA, affording a further possibility for sustained release of biomacromolecules after encapsulation. Effects of CNT loading on fiber morphology, structure, thermal/mechanical properties, degradation, and cell viability are also investigated. This novel class of porous electrospun fibers with self-sealing capability has great potential to serve as an enabling strategy for trapping/release of biomacromolecules with promising applications in, for example, preventing inflammatory diseases by scavenging cytokines from interstitial body fluids.
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Affiliation(s)
- Jin Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Ting Zheng
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Emine Alarçin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Batzaya Byambaa
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Xiaofei Guan
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Zhongming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
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15
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Li R, Wang Z, Han P, He Y, Zhang X, Wang Y. Refreshing Rubbers as Customized Photothermal Conversion Materials through Post-Darkening Modeling Production. Chemistry 2017; 23:17889-17893. [DOI: 10.1002/chem.201704715] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Indexed: 01/06/2023]
Affiliation(s)
- Ruiting Li
- Department of Chemistry; Renmin University of China; Beijing 100872 China
| | - Zhen Wang
- Department of Chemistry; Renmin University of China; Beijing 100872 China
| | - Peng Han
- SINOPEC Beijing Research Institute of Chemical Industry; Beijing 100013 China
| | - Yonglin He
- Department of Chemistry; Renmin University of China; Beijing 100872 China
| | - Xiaohong Zhang
- SINOPEC Beijing Research Institute of Chemical Industry; Beijing 100013 China
| | - Yapei Wang
- Department of Chemistry; Renmin University of China; Beijing 100872 China
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16
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Cheng B, Qian L, Qian HJ, Lu ZY, Cui S. Effects of stereo-regularity on the single-chain mechanics of polylactic acid and its implications on the physical properties of bulk materials. NANOSCALE 2017; 9:14312-14316. [PMID: 28936502 DOI: 10.1039/c7nr06483g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The material properties of polylactic acid (PLA) are largely determined by its stereo-regularity (tacticity). To find out the origin at the molecular level, the single-chain mechanics of poly-l-lactic acid (PLLA) and poly-d,l-lactide (PDLLA) were comparatively investigated by single-molecule atomic force microscopy (AFM). At a low concentration, PLLA adopted a random-coil conformation in a good solvent. At a high concentration, however, the PLLA chain can be induced into a helix, which consumed additional energy during unfolding by further stretching. Due to the random arrangement of l- and d-repeating units in the PDLLA chain, PDLLA adopts a random-coil conformation at all concentrations. The difference in single-chain mechanics of PLLA and PDLLA at high concentrations may be the cause of their different macroscopic properties. This is the first report to reveal the stereo-regularity-dependent mechanics of a polymer at the single-molecule level, which may help to bridge the gap between understanding single-molecule and materials properties.
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Affiliation(s)
- Bo Cheng
- Key Lab of Advanced Technologies of Materials, Ministry of Education of China, Southwest Jiaotong University, Chengdu 610031, P. R. China.
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17
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Wang Z, Song J, Zhang S, Xu XQ, Wang Y. Formulating Polyethylene Glycol as Supramolecular Emulsifiers for One-Step Double Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9160-9169. [PMID: 28825306 DOI: 10.1021/acs.langmuir.7b02326] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
One-step double emulsions via only one-step emulsification are leading to an attractive branch of emulsion research studies owing to the ease of preparation and reduced surfactant numbers. In addition to controlling the oil/water ratio, exploiting emulsifiers with desirable amphiphilicity that can stabilize both the inner and outer water/oil interfaces is crucial to the formation of one-step double emulsions. In particular, new emulsifiers with saving laborious efforts are highly preferred in consideration of low cost and practical applications. In this work, a commonly used homopolymer, polyethylene glycol (PEG), was attempted as emulsifiers to prepare emulsions via one-step emulsification. PEG is generally considered as a hydrophilic polymer and always anchored with a hydrophobic polymer to make the copolymer amphiphilic. In the water-chloroform binary system, PEG itself exhibits amphiphilic performance and tailors the formation of single emulsions or double W/O/W emulsions on the dependence of the oil/water ratio and the PEG concentration. A possible mechanism as explained by dissipative particle dynamics simulation was proposed to demonstrate the amphiphilic feature and emulsification capability of PEG. The amphiphilicity of PEG was further tuned by interacting with iodine as a result of the formation of a supramolecular complex, which, in turn, led to the conversion from single emulsions to O/W/O double emulsions. It is believed that this line of research provides inspiration for the preparation of controllable emulsions through supramolecular routes.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Jiaqi Song
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Shiming Zhang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Xiao-Qi Xu
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
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18
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Wang D, Liao S, Zhang S, Wang Y. A Reversed Photosynthesis-like Process for Light-Triggered CO 2 Capture, Release, and Conversion. CHEMSUSCHEM 2017; 10:2573-2577. [PMID: 28419724 DOI: 10.1002/cssc.201700365] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 06/07/2023]
Abstract
Materials for CO2 capture have been extensively exploited for climate governance and gas separation. However, their regeneration is facing the problems of high energy cost and secondary CO2 contamination. Herein, a reversed photosynthesis-like process is proposed, in which CO2 is absorbed in darkness while being released under light illumination. The process is likely supplementary to natural photosynthesis of plants, in which, on the contrary, CO2 is released during the night. Remarkably, the material used here is able to capture 9.6 wt.% CO2 according to its active component. Repeatable CO2 capture at room temperature and release under light irradiation ensures its convenient and cost-effective regeneration. Furthermore, CO2 released from the system is successfully converted into a stable compound in tandem with specific catalysts.
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Affiliation(s)
- Dingguan Wang
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Shenglong Liao
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Shiming Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
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19
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Wang Z, Cao Y, Zhang X, Wang D, Liu M, Xie Z, Wang Y. Rapid Self-Assembly of Block Copolymers for Flower-Like Particles with High Throughput. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13517-13524. [PMID: 27993024 DOI: 10.1021/acs.langmuir.6b03940] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The self-assembly of block copolymers has evolved into a foremost bottom-up approach for building polymeric materials. Historical challenges exist within this lively field, including the scalability and elegant simplicity of self-assembled aggregates with predictable structures. Here, we report a generally applicable strategy for the rapid self-assembly of poly(ethylene glycol)-block-poly(l-lactic acid) with the help of a single oil-in-water emulsion. A kind of flower-like polymer particle with filamentous surface branches is rapidly formed after removing the oil phase from the emulsion system. Moreover, the dimension of the branched filaments and the spherical internal core can be controlled through regulating the block ratio and the emulsification conditions. In particular, we propose an explosion theory as a balance between phase separation and interchain interaction for explaining the formation of the branched structures of the flower-like particles. The particles with high throughput are further functionalized with polypyrrole for their use in enhanced photoelectric-sensing applications.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Yuanyuan Cao
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Xinyue Zhang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Dingguan Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Ming Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science , Changchun 130022, China
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science , Changchun 130022, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
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Wang Z, Wang Y. Tuning Amphiphilicity of Particles for Controllable Pickering Emulsion. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E903. [PMID: 28774029 PMCID: PMC5457260 DOI: 10.3390/ma9110903] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 01/14/2023]
Abstract
Pickering emulsions with the use of particles as emulsifiers have been extensively used in scientific research and industrial production due to their edge in biocompatibility and stability compared with traditional emulsions. The control over Pickering emulsion stability and type plays a significant role in these applications. Among the present methods to build controllable Pickering emulsions, tuning the amphiphilicity of particles is comparatively effective and has attracted enormous attention. In this review, we highlight some recent advances in tuning the amphiphilicity of particles for controlling the stability and type of Pickering emulsions. The amphiphilicity of three types of particles including rigid particles, soft particles, and Janus particles are tailored by means of different mechanisms and discussed here in detail. The stabilization-destabilization interconversion and phase inversion of Pickering emulsions have been successfully achieved by changing the surface properties of these particles. This article provides a comprehensive review of controllable Pickering emulsions, which is expected to stimulate inspiration for designing and preparing novel Pickering emulsions, and ultimately directing the preparation of functional materials.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
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Liang Y, Gao W, Peng X, Deng X, Sun C, Wu H, He B. Near infrared light responsive hybrid nanoparticles for synergistic therapy. Biomaterials 2016; 100:76-90. [PMID: 27244691 DOI: 10.1016/j.biomaterials.2016.05.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 05/03/2016] [Accepted: 05/17/2016] [Indexed: 02/04/2023]
Abstract
A near infrared (NIR) light responsive chromophore 7-(diethylamino)-4-(hydroxymethyl)-2H-chromen-2-one (DEACM) was synthesized and incorporated to β-cyclodextrins with cRGD functionalized poly(ethylene glycol), the amphiphiles were coordinated with Au nanorods or nanoparticles to load anticancer drug doxorubicin (DOX) for fabricating hybrid nanoparticles. The π-π stacking interaction between DEACM and DOX was formed in the hybrid nanoparticles, which contributed to the high drug loading content. The Au nanorods or nanoparticles enhanced the photosolvolysis of DEACM under the irradiation of NIR with 808 nm wavelength and triggered the accelerated drug release from the nanoparticles. The drug loaded hybrid nanoparticles with NIR irradiation exhibited efficient inhibition effect on the proliferation of 4T1 breast cancer cells in vitro. The in vivo anticancer activity study on breast cancer bearing mice revealed that the hybrid nanoparticles containing Au nanorods exhibited excellent anticancer activity under the irradiation of 808 nm wavelength NIR with 800 mW.
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Affiliation(s)
- Yan Liang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Wenxia Gao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China.
| | - Xinyu Peng
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Xin Deng
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Changzhen Sun
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Huayue Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Bin He
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
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Affiliation(s)
- Yuanyuan Cao
- Department of Chemistry; Renmin University of China; Beijing 100872 China
| | - Yapei Wang
- Department of Chemistry; Renmin University of China; Beijing 100872 China
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Si Y, Chen M, Wu L. Syntheses and biomedical applications of hollow micro-/nano-spheres with large-through-holes. Chem Soc Rev 2016; 45:690-714. [DOI: 10.1039/c5cs00695c] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review mainly discussed the syntheses and biomedical applications of hollow micro-/nano-spheres with large-through-holes in shells.
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Affiliation(s)
- Yinsong Si
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai 200433
- P. R. China
| | - Min Chen
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai 200433
- P. R. China
| | - Limin Wu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai 200433
- P. R. China
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24
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Tuning Microparticle Porosity during Single Needle Electrospraying Synthesis via a Non-Solvent-Based Physicochemical Approach. Polymers (Basel) 2015. [DOI: 10.3390/polym7121531] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Cao Y, Wang Z, Liao S, Wang J, Wang Y. A Light-Activated Microheater for the Remote Control of Enzymatic Catalysis. Chemistry 2015; 22:1152-8. [DOI: 10.1002/chem.201503665] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Yuanyuan Cao
- Department of Chemistry; Renmin University of China; Beijing 100872 PR China
| | - Zhen Wang
- Department of Chemistry; Renmin University of China; Beijing 100872 PR China
| | - Shenglong Liao
- Department of Chemistry; Renmin University of China; Beijing 100872 PR China
| | - Jian Wang
- Department of Chemistry; Renmin University of China; Beijing 100872 PR China
| | - Yapei Wang
- Department of Chemistry; Renmin University of China; Beijing 100872 PR China
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26
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Huang X, Yang Y, Shi J, Ngo HT, Shen C, Du W, Wang Y. High-Internal-Phase Emulsion Tailoring Polymer Amphiphilicity towards an Efficient NIR-Sensitive Bacteria Filter. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4876-4883. [PMID: 26110234 DOI: 10.1002/smll.201501396] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 06/04/2023]
Abstract
Emulsions having a high internal-phase volume fraction—termed as HIPEs for high internal phase emulsions—are in high demand as templates for functional macroporous materials. Designing molecular surfactants with appropriate amphiphilicity plays a critical role in the HIPE preparation. In this study, successful tailoring of the amphiphilicity of the originally hydrophobic block co-polymer of polystyrene-b-polyvinylpyridine (PS-b-P4VP) is reported. In combination with trifluoroacetic acid, less than 5 wt% of the polymer-CF3COOH system is feasible as a surfactant for HIPE preparation; this is lower than the amounts typically needed for commonly used commercial surfactants. Using the HIPEs as templates, well-defined closed- and open-cell macroporous triacrylate-based monoliths are fabricated simply through the adjustment of the ratio of the water phase to oil phase. After coating the resulting macroporous material with polypyrrole nanoparticles, the system can be exploited as an NIR-sensitive filter for bacteria; it not only excludes oversized bacteria, but it also kills the bacteria with the help of NIR-induced heat.
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Affiliation(s)
- Xiaopeng Huang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Youdi Yang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Jiezhong Shi
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Huynh Thien Ngo
- National Institute for Materials Science (NIMS-MANA), Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan
| | - Chaohua Shen
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wenbin Du
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
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27
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Fan H, Jin Z. Hierarchical porous polycaprolactone microspheres generated via a simple pathway combining nanoprecipitation and hydrolysis. Chem Commun (Camb) 2015; 51:15114-7. [DOI: 10.1039/c5cc04586j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrated a one-pot, soap-free fabrication of porous polycaprolactone microspheres by combining nanoprecipitation and hydrolysis. The obtained porous polycaprolactone microspheres show great advantages for application in drug delivery.
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Affiliation(s)
- Hailong Fan
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- P. R. China
| | - Zhaoxia Jin
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- P. R. China
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