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Tang Q, Yuan X, Zou M, Zhang L, Chang L, Chen X, Zhang J, Zhou G, Gao K, Guo W, Chen Y. Mismatched Refractive Index Strategy for Fabricating Laser-Driven Wood Diffusers from Bulk Wood for Illumination Applications. Adv Mater 2024; 36:e2306593. [PMID: 38174617 DOI: 10.1002/adma.202306593] [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] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 12/11/2023] [Indexed: 01/05/2024]
Abstract
Laser-diode-based solid-state lighting is primarily used in state-of-the-art illumination systems. However, these systems rely on light-converting inorganic phosphors, which have low quantum efficiencies and complex manufacturing conditions. In this study, a mismatched refractive index strategy is proposed to directly convert natural bulk wood into a laser-driven wood diffuser using a simple delignification and polymer infiltration method. The resulting material has the potential to be used in laser-driven diffuse illumination applications. The optical performance of the laser-driven wood diffuser is optimized by changing the density of natural wood. The optimal coefficient of illuminance variation of the wood diffuser is as low as 17.7%, which is significantly lower than that of commercial diffusers. The illuminance uniformity is larger than 0.9, which is significantly higher than the ISO requirements for indoor workplace lighting. The laser damage threshold is 7.9 J cm-2, which is considerably higher than those of the substrates of commercially available phosphors. Furthermore, the optimized wood diffuser exhibits outstanding mechanical properties, excellent thermal stability, tolerance to harsh environmental conditions, and low speckle contrast. These results show that the laser-driven wood diffuser is a promising laser-color converter that is suitable for indoor, long-distance outdoor, undersea, and other high-luminance laser lighting applications.
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Affiliation(s)
- Qiheng Tang
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Xiao Yuan
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Miao Zou
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Lei Zhang
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Liang Chang
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Xueqi Chen
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Jie Zhang
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Guanwu Zhou
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Kezheng Gao
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, P. R. China
| | - Wenjing Guo
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
| | - Yongping Chen
- Research Institute of Wood Industry, Chinese Academy of Forestry, No.1 Dongxiaofu, Haidian District, Beijing, 10091, P. R. China
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2
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Yuan Y, Tyson C, Szyniec A, Agro S, Tavakol TN, Harmon A, Lampkins D, Pearson L, Dumas JE, Taite LJ. Bioactive Polyurethane- Poly(ethylene Glycol) Diacrylate Hydrogels for Applications in Tissue Engineering. Gels 2024; 10:108. [PMID: 38391438 PMCID: PMC10887679 DOI: 10.3390/gels10020108] [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: 12/29/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/24/2024] Open
Abstract
Polyurethanes (PUs) are a highly adaptable class of biomaterials that are among some of the most researched materials for various biomedical applications. However, engineered tissue scaffolds composed of PU have not found their way into clinical application, mainly due to the difficulty of balancing the control of material properties with the desired cellular response. A simple method for the synthesis of tunable bioactive poly(ethylene glycol) diacrylate (PEGDA) hydrogels containing photocurable PU is described. These hydrogels may be modified with PEGylated peptides or proteins to impart variable biological functions, and the mechanical properties of the hydrogels can be tuned based on the ratios of PU and PEGDA. Studies with human cells revealed that PU-PEG blended hydrogels support cell adhesion and viability when cell adhesion peptides are crosslinked within the hydrogel matrix. These hydrogels represent a unique and highly tailorable system for synthesizing PU-based synthetic extracellular matrices for tissue engineering applications.
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Affiliation(s)
- Yixuan Yuan
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | - Caleb Tyson
- Department of Chemical Engineering, Hampton University, Hampton, VA 23668, USA
| | - Annika Szyniec
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | - Samuel Agro
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | - Tara N Tavakol
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Alexander Harmon
- Department of Chemical Engineering, Hampton University, Hampton, VA 23668, USA
| | - DessaRae Lampkins
- Department of Chemical Engineering, Hampton University, Hampton, VA 23668, USA
| | - Lauran Pearson
- Department of Chemical Engineering, Hampton University, Hampton, VA 23668, USA
| | - Jerald E Dumas
- Joint School of Nanoscience and Nanoengineering, North Carolina Agricultural & Technical State University, Greensboro, NC 27401, USA
| | - Lakeshia J Taite
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22903, USA
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3
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Zhang M, Xie W, Liu M, Liu S, Wang W, Jin Z, Wang A, Qiu J, Zhao P, Shi Z. New Quasi-Solid-State Li-SPAN Battery Enhanced by In Situ Thermally Polymerized Gel Polymer Electrolytes. ACS Appl Mater Interfaces 2024; 16:1578-1586. [PMID: 38118050 DOI: 10.1021/acsami.3c16173] [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: 12/22/2023]
Abstract
A lithium-sulfur (Li-S) battery is a promising candidate for an electrochemical energy-storage system. However, for a long time, it suffered from the "shuttle effect" of the intermediate products of soluble polysulfides and safety issues concerning the combustible liquid electrolyte and lithium anode. In this work, sulfide polyacrylonitrile (SPAN) is employed as a solid cycled cathode to resolve the "shuttle effect" fundamentally, a gel polymer electrolyte (GPE) based on poly(ethylene glycol) diacrylate (PEGDA) is matched to the SPAN cathode to minimize the safety concerns, and finally, a quasi-solid-state Li-SPAN battery is combined by an in situ thermal polymerization strategy to improve its adaptability to the existing battery assembly processes. The PEGDA-based GPE achieved at 60 °C for 40 min ensures little damage to the in situ battery, a good electrode-electrolyte interface, a high ionic conductivity of 6.87 × 10-3 S cm-1 at 30 °C, and a wide electrochemical window of 4.53 V. Ultimately, the as-prepared SPAN composite exerts a specific capacity of 1217.3 mAh g-1 after 250 cycles at 0.2 C with a high capacity retention rate of 89.9%. The combination of the SPAN cathode and in situ thermally polymerized PEGDA-based GPE provides a new inspiration for the design of Li-SPAN batteries with both high specific energy and high safety.
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Affiliation(s)
- Mingxu Zhang
- Research Institute of Chemical Defense, Beijing 100191, China
| | - Wenhao Xie
- Research Institute of Chemical Defense, Beijing 100191, China
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Meng Liu
- Research Institute of Chemical Defense, Beijing 100191, China
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Siyu Liu
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Weikun Wang
- Research Institute of Chemical Defense, Beijing 100191, China
| | - Zhaoqing Jin
- Research Institute of Chemical Defense, Beijing 100191, China
| | - Anbang Wang
- Research Institute of Chemical Defense, Beijing 100191, China
| | - Jingyi Qiu
- Research Institute of Chemical Defense, Beijing 100191, China
| | - Pengcheng Zhao
- Research Institute of Chemical Defense, Beijing 100191, China
| | - Zhicong Shi
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
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4
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Panebianco CJ, Constant C, Vernengo AJ, Nehrbass D, Gehweiler D, DiStefano TJ, Martin J, Alpert DJ, Chaudhary SB, Hecht AC, Seifert AC, Nicoll SB, Grad S, Zeiter S, Iatridis JC. Combining adhesive and nonadhesive injectable hydrogels for intervertebral disc repair in an ovine discectomy model. JOR Spine 2023; 6:e1293. [PMID: 38156055 PMCID: PMC10751969 DOI: 10.1002/jsp2.1293] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 09/12/2023] [Accepted: 09/20/2023] [Indexed: 12/30/2023] Open
Abstract
Background Intervertebral disc (IVD) disorders (e.g., herniation) directly contribute to back pain, which is a leading cause of global disability. Next-generation treatments for IVD herniation need advanced preclinical testing to evaluate their ability to repair large defects, prevent reherniation, and limit progressive degeneration. This study tested whether experimental, injectable, and nonbioactive biomaterials could slow IVD degeneration in an ovine discectomy model. Methods Ten skeletally mature sheep (4-5.5 years) experienced partial discectomy injury with cruciate-style annulus fibrosus (AF) defects and 0.1 g nucleus pulposus (NP) removal in the L1-L2, L2-L3, and L3-L4 lumbar IVDs. L4-L5 IVDs were Intact controls. IVD injury levels received: (1) no treatment (Injury), (2) poly (ethylene glycol) diacrylate (PEGDA), (3) genipin-crosslinked fibrin (FibGen), (4) carboxymethylcellulose-methylcellulose (C-MC), or (5) C-MC and FibGen (FibGen + C-MC). Animals healed for 12 weeks, then IVDs were assessed using computed tomography (CT), magnetic resonance (MR) imaging, and histopathology. Results All repaired IVDs retained ~90% of their preoperative disc height and showed minor degenerative changes by Pfirrmann grading. All repairs had similar disc height loss and Pfirrmann grade as Injury IVDs. Adhesive AF sealants (i.e., PEGDA and FibGen) did not herniate, although repair caused local endplate (EP) changes and inflammation. NP repair biomaterials (i.e., C-MC) and combination repair (i.e., FibGen + C-MC) exhibited lower levels of degeneration, less EP damage, and less severe inflammation; however, C-MC showed signs of herniation via biomaterial expulsion. Conclusions All repair IVDs were noninferior to Injury IVDs by IVD height loss and Pfirrmann grade. C-MC and FibGen + C-MC IVDs had the best outcomes, and may be appropriate for enhancement with bioactive factors (e.g., cells, growth factors, and miRNAs). Such bioactive factors appear to be necessary to prevent injury-induced IVD degeneration. Application of AF sealants alone (i.e., PEGDA and FibGen) resulted in EP damage and inflammation, particularly for PEGDA IVDs, suggesting further material refinements are needed.
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Affiliation(s)
- Christopher J. Panebianco
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
- Department of Orthopaedic SurgeryUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | | | - Andrea J. Vernengo
- AO Research Institute DavosDavosSwitzerland
- Department of Chemical EngineeringRowan UniversityGlassboroNJUSA
| | | | | | - Tyler J. DiStefano
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Jesse Martin
- Department of Biomedical EngineeringThe City College of New YorkNew YorkNew YorkUSA
| | - David J. Alpert
- Department of Biomedical EngineeringThe City College of New YorkNew YorkNew YorkUSA
| | - Saad B. Chaudhary
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Andrew C. Hecht
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Alan C. Seifert
- Biomedical Engineering and Imaging InstituteIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Steven B. Nicoll
- Department of Biomedical EngineeringThe City College of New YorkNew YorkNew YorkUSA
| | | | | | - James C. Iatridis
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
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5
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Guo M, Deng Y, Huang J, Huang Y, Deng J, Wu H. Fabrication and Validation of a 3D Portable PEGDA Microfluidic Chip for Visual Colorimetric Detection of Captured Breast Cancer Cells. Polymers (Basel) 2023; 15:3183. [PMID: 37571077 PMCID: PMC10421435 DOI: 10.3390/polym15153183] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 08/13/2023] Open
Abstract
To guide therapeutic strategies and to monitor the state changes in the disease, a low-cost, portable, and easily fabricated microfluidic-chip-integrated three-dimensional (3D) microchamber was designed for capturing and analyzing breast cancer cells. Optimally, a colorimetric sensor array was integrated into a microfluidic chip to discriminate the metabolites of the cells. The ultraviolet polymerization characteristic of poly(ethylene glycol) diacrylate (PEGDA) hydrogel was utilized to rapidly fabricate a three-layer hydrogel microfluidic chip with the designed structure under noninvasive 365 nm laser irradiation. 2-Hydroxyethyl methacrylate (HEMA) was added to the prepolymer in order to increase the adhesive capacity of the microchip's surface for capturing cells. 1-Vinyl-2-pyrrolidone (NVP) was designed to improve the toughness and reduce the swelling capacity of the hydrogel composite. A non-toxic 3D hydrogel microarray chip (60 mm × 20 mm × 3 mm) with low immunogenicity and high hydrophilicity was created to simulate the real physiological microenvironment of breast tissue. The crisscross channels were designed to ensure homogeneous seeding density. This hydrogel material displayed excellent biocompatibility and tunable physical properties compared with traditional microfluidic chip materials and can be directly processed to obtain the most desirable microstructure. The feasibility of using a PEGDA hydrogel microfluidic chip for the real-time online detection of breast cancer cells' metabolism was confirmed using a specifically designed colorimetric sensor array with 16 kinds of porphyrin, porphyrin derivatives, and indicator dyes. The results of the principal component analysis (PCA), the hierarchical cluster analysis (HCA), and the linear discriminant analysis (LDA) suggest that the metabolic liquids of different breast cells can be easily distinguished with the developed PEGDA hydrogel microfluidic chip. The PEGDA hydrogel microfluidic chip has potential practicable applicability in distinguishing normal and cancerous breast cells.
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Affiliation(s)
- Mingyi Guo
- College of Food Science and Technology, Sichuan Tourism University, Chengdu 610100, China; (M.G.)
- College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Yan Deng
- College of Food Science and Technology, Sichuan Tourism University, Chengdu 610100, China; (M.G.)
- College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Junqiu Huang
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong 644005, China
| | - Yanping Huang
- College of Food Science and Technology, Sichuan Tourism University, Chengdu 610100, China; (M.G.)
| | - Jing Deng
- College of Food Science and Technology, Sichuan Tourism University, Chengdu 610100, China; (M.G.)
| | - Huachang Wu
- College of Food Science and Technology, Sichuan Tourism University, Chengdu 610100, China; (M.G.)
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6
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Sun D, Liu W, Tang A, Zhou F. Tuning the Poisson's ratio of poly(ethylene glycol) diacrylate/cellulose nanofibril aerogel scaffold precisely for cultivation of bone marrow mesenchymal stem cell. J Biomed Mater Res A 2023; 111:502-513. [PMID: 36345885 DOI: 10.1002/jbm.a.37468] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/23/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
Abstract
Tissue engineering (TE) scaffolds with appropriate Poisson's ratio (PR) are suitable for mimicking the environment of native tissues on which cells could survive and thrive better. Herein, cellular structured scaffolds are made by a new composite poly(ethylene glycol) diacrylate/cellulose nanofibril aerogel, with prototypes of the hexagonal, reentrant, and semireentrant models. Scaffolds with different geometry parameters (l, t, α) are designed and simulated by COMSOL to enable precise regulation of their PR. Then, nine groups of scaffolds with different PRs ranging from -0.5 to 0.85 are designed by adjusting geometry parameters and fabricated by using stereolithography and freeze-drying techniques. Subsequently, bone marrow mesenchymal stem cells (BMSc) are cultured on these scaffolds for 21 days, during which CCK8 assay, fluorescence microscope observation, and real-time polymerase chain reaction experiments are performed to characterize the proliferation and differentiation of BMSc. The results reflect that the scaffolds with different PR can provide various stress environments for cells, and the scaffold with zero PR is the most suitable for BMSc differentiating into chondrocytes during early culture experiments. This study suggests that tuning PR precisely is an attractive and effective strategy to provide a cells-suitable environment for scaffold fabrication for TE.
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Affiliation(s)
- Dong Sun
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Wangyu Liu
- School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China
| | - Aimin Tang
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Feng Zhou
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, China
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7
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Khalili M, Williams CJ, Micallef C, Duarte-Martinez F, Afsar A, Zhang R, Wilson S, Dossi E, Impey SA, Goel S, Aria AI. Nanoindentation Response of 3D Printed PEGDA Hydrogels in a Hydrated Environment. ACS Appl Polym Mater 2023; 5:1180-1190. [PMID: 36817334 PMCID: PMC9926483 DOI: 10.1021/acsapm.2c01700] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 12/27/2022] [Indexed: 05/09/2023]
Abstract
Hydrogels are commonly used materials in tissue engineering and organ-on-chip devices. This study investigated the nanomechanical properties of monolithic and multilayered poly(ethylene glycol) diacrylate (PEGDA) hydrogels manufactured using bulk polymerization and layer-by-layer projection lithography processes, respectively. An increase in the number of layers (or reduction in layer thickness) from 1 to 8 and further to 60 results in a reduction in the elastic modulus from 5.53 to 1.69 and further to 0.67 MPa, respectively. It was found that a decrease in the number of layers induces a lower creep index (CIT) in three-dimensional (3D) printed PEGDA hydrogels. This reduction is attributed to mesoscale imperfections that appear as pockets of voids at the interfaces of the multilayered hydrogels attributed to localized regions of unreacted prepolymers, resulting in variations in defect density in the samples examined. An increase in the degree of cross-linking introduced by a higher dosage of ultraviolet (UV) exposure leads to a higher elastic modulus. This implies that the elastic modulus and creep behavior of hydrogels are governed and influenced by the degree of cross-linking and defect density of the layers and interfaces. These findings can guide an optimal manufacturing pathway to obtain the desirable nanomechanical properties in 3D printed PEGDA hydrogels, critical for the performance of living cells and tissues, which can be engineered through control of the fabrication parameters.
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Affiliation(s)
- Mohammad
Hakim Khalili
- Surface
Engineering and Precision Centre, School of Aerospace, Transport and
Manufacturing, Cranfield University, Cranfield MK43 0AL, U.K.
| | - Craig J. Williams
- The
Henry Royce Institute, Department of Materials, The University of Manchester, Manchester M13 9PL, U.K.
| | - Christian Micallef
- Surface
Engineering and Precision Centre, School of Aerospace, Transport and
Manufacturing, Cranfield University, Cranfield MK43 0AL, U.K.
| | - Fabian Duarte-Martinez
- Surface
Engineering and Precision Centre, School of Aerospace, Transport and
Manufacturing, Cranfield University, Cranfield MK43 0AL, U.K.
| | - Ashfaq Afsar
- School
of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, U.K.
- Centre
for Defence Chemistry, Cranfield University, Shrivenham, Swindon SN6 8LA, U.K.
| | - Rujing Zhang
- Sophion
Bioscience A/S, Baltorpvej 154, 2750 Ballerup, Denmark
| | - Sandra Wilson
- Sophion
Bioscience A/S, Baltorpvej 154, 2750 Ballerup, Denmark
| | - Eleftheria Dossi
- Centre
for Defence Chemistry, Cranfield University, Shrivenham, Swindon SN6 8LA, U.K.
| | - Susan A. Impey
- Surface
Engineering and Precision Centre, School of Aerospace, Transport and
Manufacturing, Cranfield University, Cranfield MK43 0AL, U.K.
| | - Saurav Goel
- London South
Bank University, 103
Borough Road, London SE1
0AA, U.K.
- University
of Petroleum and Energy Studies, Dehradun 248007, India
| | - Adrianus Indrat Aria
- Surface
Engineering and Precision Centre, School of Aerospace, Transport and
Manufacturing, Cranfield University, Cranfield MK43 0AL, U.K.
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Maccaferri E, Canciani A, Mazzocchetti L, Benelli T, Giorgini L, Albonetti S. Water-Resistant Photo-Crosslinked PEO/PEGDA Electrospun Nanofibers for Application in Catalysis. Membranes (Basel) 2023; 13:212. [PMID: 36837715 PMCID: PMC9968077 DOI: 10.3390/membranes13020212] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/27/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Catalysts are used for producing the vast majority of chemical products. Usually, catalytic membranes are inorganic. However, when dealing with reactions conducted at low temperatures, such as in the production of fine chemicals, polymeric catalytic membranes are preferred due to a more competitive cost and easier tunability compared to inorganic ones. In the present work, nanofibrous mats made of poly(ethylene oxide), PEO, and poly(ethylene glycol) diacrylate, PEGDA, blends with the Au/Pd catalyst are proposed as catalytic membranes for water phase and low-temperature reactions. While PEO is a water-soluble polymer, its blending with PEGDA can be exploited to make the overall PEO/PEGDA blend nanofibers water-resistant upon photo-crosslinking. Thus, after the optimization of the blend solution (PEO molecular weight, PEO/PEGDA ratio, photoinitiator amount), electrospinning process, and UV irradiation time, the resulting nanofibrous mat is able to maintain the nanostructure in water. The addition of the Au6/Pd1 catalyst (supported on TiO2) in the PEO/PEGDA blend allows the production of a catalytic nanofibrous membrane. The reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP), taken as a water phase model reaction, demonstrates the potential usage of PEO-based membranes in catalysis.
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Affiliation(s)
- Emanuele Maccaferri
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
- Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
| | - Andrea Canciani
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Laura Mazzocchetti
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
- Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
| | - Tiziana Benelli
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
- Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
| | - Loris Giorgini
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
- Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
| | - Stefania Albonetti
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
- Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
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9
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Burratti L, Zannotti M, Maranges V, Giovannetti R, Duranti L, De Matteis F, Francini R, Prosposito P. Poly(ethylene glycol) Diacrylate Hydrogel with Silver Nanoclusters for Water Pb(II) Ions Filtering. Gels 2023; 9:gels9020133. [PMID: 36826304 PMCID: PMC9957228 DOI: 10.3390/gels9020133] [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: 01/13/2023] [Revised: 01/25/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
Poly(ethylene glycol) diacrylate (PEGDA) hydrogels modified with luminescent silver nanoclusters (AgNCs) are synthesized by a photo-crosslinking process. The hybrid material thus obtained is employed to filter Pb(II) polluted water. Under the best conditions, the nanocomposite is able to remove up to 80-90% of lead contaminant, depending on the filter composition. The experimental results indicate that the adsorption process of Pb(II) onto the modified filter can be well modeled using the Freundlich isotherm, thus revealing that the chemisorption is the driving process of Pb(II) adsorption. In addition, the parameter n in the Freundlich model suggests that the adsorption process of Pb(II) ions in the modified hydrogel is favored. Based on the obtained remarkable contaminant uptake capacity and the overall low cost, this hybrid system appears to be a promising sorbent material for the removal of Pb(II) ions from aqueous media.
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Affiliation(s)
- Luca Burratti
- Department of Industrial Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
- Correspondence: (L.B.); (M.Z.)
| | - Marco Zannotti
- Department School of Science and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Ceneri, 62032 Camerino, Italy
- Correspondence: (L.B.); (M.Z.)
| | - Valentin Maranges
- Department of Industrial Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
| | - Rita Giovannetti
- Department School of Science and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Ceneri, 62032 Camerino, Italy
| | - Leonardo Duranti
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via Della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Fabio De Matteis
- Department of Industrial Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
| | - Roberto Francini
- Department of Industrial Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
| | - Paolo Prosposito
- Department of Industrial Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
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10
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Palucci Rosa R, Rosace G, Arrigo R, Malucelli G. Preparation and Characterization of 3D-Printed Biobased Composites Containing Micro- or Nanocrystalline Cellulose. Polymers (Basel) 2022; 14:polym14091886. [PMID: 35567055 PMCID: PMC9105471 DOI: 10.3390/polym14091886] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 04/28/2022] [Accepted: 05/01/2022] [Indexed: 01/27/2023] Open
Abstract
Stereolithography (SLA), one of the seven different 3D printing technologies, uses photosensitive resins to create high-resolution parts. Although SLA offers many advantages for medical applications, the lack of biocompatible and biobased resins limits its utilization. Thus, the development of new materials is essential. This work aims at designing, developing, and fully characterizing a bio-resin system (made of poly(ethylene glycol) diacrylate (PEGDA) and acrylated epoxidized soybean oil (AESO)), filled with micro- or nanocellulose crystals (MCC and CNC), suitable for 3D printing. The unfilled resin system containing 80 wt.% AESO was identified as the best resin mixture, having a biobased content of 68.8%, while ensuring viscosity values suitable for the 3D printing process (>1.5 Pa s). The printed samples showed a 93% swelling decrease in water, as well as increased tensile strength (4.4 ± 0.2 MPa) and elongation at break (25% ± 2.3%). Furthermore, the incorporation of MCC and CNC remarkably increased the tensile strength and Young’s modulus of the cured network, thus indicating a strong reinforcing effect exerted by the fillers. Lastly, the presence of the fillers did not affect the UV-light penetration, and the printed parts showed a high quality, thus proving their potential for precise applications.
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Affiliation(s)
- Raphael Palucci Rosa
- Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, Dalmine, 24044 Bergamo, Italy
- Correspondence:
| | - Giuseppe Rosace
- Department of Engineering and Applied Sciences, University of Bergamo, Local INSTM Unit, Viale Marconi 5, Dalmine, 24044 Bergamo, Italy;
| | - Rossella Arrigo
- Department of Applied Science and Technology, Politecnico di Torino, Local INSTM Unit, Viale T. Michel 5, Provincia di Alessandria, 15121 Alessandria, Italy; (R.A.); (G.M.)
| | - Giulio Malucelli
- Department of Applied Science and Technology, Politecnico di Torino, Local INSTM Unit, Viale T. Michel 5, Provincia di Alessandria, 15121 Alessandria, Italy; (R.A.); (G.M.)
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11
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Ghovvati M, Baghdasarian S, Baidya A, Dhal J, Annabi N. Engineering a highly elastic bioadhesive for sealing soft and dynamic tissues. J Biomed Mater Res B Appl Biomater 2022; 110:1511-1522. [PMID: 35148016 DOI: 10.1002/jbm.b.35012] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/27/2021] [Accepted: 01/11/2022] [Indexed: 12/19/2022]
Abstract
Injured tissues often require immediate closure to restore the normal functionality of the organ. In most cases, injuries are associated with trauma or various physical surgeries where different adhesive hydrogel materials are applied to close the wounds. However, these materials are typically toxic, have low elasticity, and lack strong adhesion especially to the wet tissues. In this study, a stretchable composite hydrogel consisting of gelatin methacrylol catechol (GelMAC) with ferric ions, and poly(ethylene glycol) diacrylate (PEGDA) was developed. The engineered material could adhere to the wet tissue surfaces through the chemical conjugation of catechol and methacrylate groups to the gelatin backbone. Moreover, the incorporation of PEGDA enhanced the elasticity of the bioadhesives. Our results showed that the physical properties and adhesion of the hydrogels could be tuned by changing the ratio of GelMAC/PEGDA. In addition, the in vitro toxicity tests confirmed the biocompatibility of the engineered bioadhesives. Finally, using an ex vivo lung incision model, we showed the potential application of the developed bioadhesives for sealing elastic tissues.
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Affiliation(s)
- Mahsa Ghovvati
- Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, California, USA
| | - Sevana Baghdasarian
- Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, California, USA
| | - Avijit Baidya
- Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, California, USA
| | - Jharana Dhal
- Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, California, USA
| | - Nasim Annabi
- Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, California, USA
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12
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Abstract
Cell therapies are hampered by a lack of available delivery systems, resulting in inconsistent outcomes in animal studies and human clinical trials. Hydrogel encapsulants offer a broad range of tunable characteristics in the design of cell delivery vehicles. The focus of the hydrogel field has been on durable encapsulants that provide long-term paracrine function of the cells. However, some cell therapies require cell-to-cell contact in order to elicit their effect. Controlled release microencapsulants would be beneficial in these situations, but appropriate polymers have not been adaptable to microsphere manufacturing because they harden too slowly. We developed and tested a novel microencapsulant formulation (acrylated hyaluronic acid: AHA) with degradation characteristics as a controlled release cell delivery vehicle. The properties of AHA microspheres were evaluated and compared to those of poly(ethylene glycol) diacrylate (PEGDA), a durable hydrogel. AHA microspheres possessed a higher swelling ratio, lower diffusion barrier, faster degradation rate, a lower storage modulus, and a larger average diameter than microspheres composed of PEGDA. Additionally, in vitro cell viability and release and short-term in vivo biocompatibility in immune competent Sprague-Dawley rats was assessed for each microsphere type. Compared to PEGDA, microspheres composed of AHA resulted in significantly less foreign body response in vivo as measured by a lack of cellularity or fibrotic ring in the surrounding tissue and no cellular infiltration into the microsphere. This study illustrates the potential of AHA microspheres as a degradable cell delivery system with superior encapsulated cell viability and biocompatibility with the surrounding tissue.
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Affiliation(s)
- Megan Hamilton
- University of Kansas Bioengineering Program, 1132 Learned Hall, 1530 West 15th Street, Lawrence, Kansas 66045, United States
| | - Stephen Harrington
- Likarda LLC, 10330 Hickman Mills Drive, Suite B, Kansas City, Missouri 64137, United States
| | - Prajnaparamita Dhar
- University of Kansas Bioengineering Program, 1132 Learned Hall, 1530 West 15th Street, Lawrence, Kansas 66045, United States.,Department of Chemical and Petroleum Engineering, The University of Kansas, 4132 Learned Hall, 1530 West 15th Street, Lawrence, Kansas 66045, United States
| | - Lisa Stehno-Bittel
- Likarda LLC, 10330 Hickman Mills Drive, Suite B, Kansas City, Missouri 64137, United States
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13
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Masullo U, Cavallo A, Greco MR, Reshkin SJ, Mastrodonato M, Gallo N, Salvatore L, Verri T, Sannino A, Cardone RA, Madaghiele M. Semi-interpenetrating polymer network cryogels based on poly(ethylene glycol) diacrylate and collagen as potential off-the-shelf platforms for cancer cell research. J Biomed Mater Res B Appl Biomater 2021; 109:1313-1326. [PMID: 33427396 DOI: 10.1002/jbm.b.34792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 08/11/2020] [Revised: 12/23/2020] [Accepted: 12/27/2020] [Indexed: 01/09/2023]
Abstract
In the present work, we investigated the potential of novel semi-interpenetrating polymer network (semi-IPN) cryogels, obtained through ultraviolet exposure of aqueous mixtures of poly(ethylene glycol) diacrylate and type I collagen, as tunable off-the-shelf platforms for 3D cancer cell research. We synthesized semi-IPN cryogels with variable collagen amounts (0.1% and 1% w/v) and assessed the effect of collagen on key cryogel properties for cell culture, for example, porosity, degradation rate and mechanical stiffness. Then, we investigated the ability of the cryogels to sustain the long-term growth of two pancreatic ductal adenocarcinoma (PDAC) cell populations, the parenchymal Panc1 cells and their derived cancer stem cells. Results revealed that both cell lines efficiently infiltrated, attached and expanded in the cryogels over a period of 14 days. However, only when grown in the cryogels with the highest collagen concentration, both cell lines reproduced their characteristic growth pattern previously observed in collagen-enriched organotypic cultures, biomimetic of the highly fibrotic PDAC stroma. Cellular preembedding in Matrigel, that is, the classical approach to develop/grow organoids, interfered with an efficient intra-scaffold migration and growth. Although preliminary, these findings highlight the potential of the proposed cryogels as reproducible and tunable cancer cell research platforms.
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Affiliation(s)
- Ugo Masullo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Anna Cavallo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Maria Raffaella Greco
- Department of Bioscience, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Stephan J Reshkin
- Department of Bioscience, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | | | - Nunzia Gallo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Tiziano Verri
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Rosa Angela Cardone
- Department of Bioscience, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
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14
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Blacutt J, Lan Z, Cosgriff-Hernandez EM, Gordon VD. Quantitative confocal microscopy and calibration for measuring differences in cyclic-di-GMP signalling by bacteria on biomedical hydrogels. R Soc Open Sci 2021; 8:201453. [PMID: 33614081 PMCID: PMC7890475 DOI: 10.1098/rsos.201453] [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] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
The growth of bacterial biofilms on implanted medical devices causes harmful infections and device failure. Biofilm development initiates when bacteria attach to and sense a surface. For the common nosocomial pathogen Pseudomonas aeruginosa and many others, the transition to the biofilm phenotype is controlled by the intracellular signal and second messenger cyclic-di-GMP (c-di-GMP). It is not known how biomedical materials might be adjusted to impede c-di-GMP signalling, and there are few extant methods for conducting such studies. Here, we develop such a method. We allowed P. aeruginosa to attach to the surfaces of poly(ethylene glycol) diacrylate (PEGDA) hydrogels. These bacteria contained a plasmid for a green fluorescent protein (GFP) reporter for c-di-GMP. We used laser-scanning confocal microscopy to measure the dynamics of the GFP reporter for 3 h, beginning 1 h after introducing bacteria to the hydrogel. We controlled for the effects of changes in bacterial metabolism using a promoterless plasmid for GFP, and for the effects of light passing through different hydrogels being differently attenuated by using fluorescent plastic beads as 'standard candles' for calibration. We demonstrate that this method can measure statistically significant differences in c-di-GMP signalling associated with different PEGDA gel types and with the surface-exposed protein PilY1.
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Affiliation(s)
- Jacob Blacutt
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX, USA
- Center for Nonlinear Dynamics, The University of Texas at Austin, Austin, TX, USA
| | - Ziyang Lan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | | | - Vernita D. Gordon
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX, USA
- Center for Nonlinear Dynamics, The University of Texas at Austin, Austin, TX, USA
- Department of Physics, The University of Texas at Austin, Austin, TX, USA
- LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin, TX, USA
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15
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Xu W, Zhu T, Wu H, Liu L, Gong X. Poly(Ethylene Glycol) Diacrylate as the Passivation Layer for High-Performance Perovskite Solar Cells. ACS Appl Mater Interfaces 2020; 12:45045-45055. [PMID: 32915544 DOI: 10.1021/acsami.0c11468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In the past decade, greatest effect has been paid on organic-inorganic halide perovskites for approaching high-performance perovskite solar cells (PSCs). It was found that severe surface-defect within the perovskite active layer restricted further boosting device performance of PSCs. Here, we report high-performance PSCs by utilization of an ultrathin solution-processed poly(ethylene glycol) diacrylate (PEGDA) layer to passivate the surface-defect within the perovskite thin film. Systematical studies demonstrate that the PEGDA-passivated perovskite thin film exhibit suppressed nonradiative recombination and trap density, as well as superior film morphology with a smoother surface, larger crystal size, and better crystallinity. Moreover, PSCs by the PEGDA-passivated perovskite thin film exhibit suppressed charge carrier recombination, reduced charge-transfer resistance, shorter charge carrier extraction time, and enlarged built-in potential. As a result, PSCs by the PEGDA-passivated perovskite thin film show a power conversion efficiency of over 21% and a photocurrent hysteresis index of 0.037. Moreover, unencapsulated PSCs by the PEGDA-passivated perovskite thin film possess over 10 day operational stability. All these results indicate that our approach provided a facile way to boost device performance of PSCs.
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Affiliation(s)
- Wenzhan Xu
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Tao Zhu
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Haodong Wu
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Lei Liu
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Xiong Gong
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
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16
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Rajapaksha CPH, Feng C, Piedrahita C, Cao J, Kaphle V, Lüssem B, Kyu T, Jákli A. Poly(ethylene glycol) Diacrylate Based Electro-Active Ionic Elastomer. Macromol Rapid Commun 2020; 41:e1900636. [PMID: 32022395 DOI: 10.1002/marc.201900636] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/13/2020] [Indexed: 11/07/2022]
Abstract
Preparation and low voltage induced bending (converse flexoelectricity) of crosslinked poly(ethylene glycol) diacrylate (PEGDA), modified with thiosiloxane (TS) and ionic liquid (1-hexyl-3-methylimidazolium hexafluorophosphate) (IL) are reported. In between 2µm PEDOT:PSS electrodes at 1 V, it provides durable (95% retention under 5000 cycles) and relatively fast (2 s switching time) actuation with the second largest strain observed so far in ionic electro-active polymers (iEAPs). In between 40 nm gold electrodes under 8 V DC voltage, the film can be completely curled up (270° bending angle) with 6% strain that, to the best of the knowledge, is unpreceded among iEAPs. These results render great potential for the TS/PEGDA/IL based electro-active actuators for soft robotic applications.
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Affiliation(s)
| | - Chenrun Feng
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, 44240, USA
| | - Camilo Piedrahita
- Department of Polymer Engineering, University of Akron, Akron, OH, 44325, USA
| | - Jinwei Cao
- Department of Polymer Engineering, University of Akron, Akron, OH, 44325, USA
| | - Vikash Kaphle
- Department of Physics, Kent State University, Kent, OH, 44240, USA
| | - Björn Lüssem
- Department of Physics, Kent State University, Kent, OH, 44240, USA
| | - Thein Kyu
- Department of Polymer Engineering, University of Akron, Akron, OH, 44325, USA
| | - Antal Jákli
- Department of Physics, Kent State University, Kent, OH, 44240, USA.,Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, 44240, USA.,MTA Wigner Research Centre for Physics, Budapest, H1525, Hungary
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17
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Spatarelu CP, (Radu) Chiriac AL, Cursaru B, Iordache TV, Gavrila AM, Cojocaru CT, Botez RE, Trica B, Sarbu A, Teodorescu M, Tofan V, Perrin FX, Zaharia A. Composite Nanogels Based on Zeolite- Poly(ethylene glycol) Diacrylate for Controlled Drug Delivery. Nanomaterials (Basel) 2020; 10:E195. [PMID: 31979174 PMCID: PMC7075022 DOI: 10.3390/nano10020195] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/11/2020] [Accepted: 01/14/2020] [Indexed: 11/16/2022]
Abstract
This study presents the design of novel composites nanogels, based on poly(ethylene glycol) diacrylate and natural zeolite particles, that are able to act as materials with controlled drug delivery properties. Natural zeolite‒nanogels composite, with varying zeolite contents, were obtained by an inverse mini-emulsion technique and loaded with 5-fluorouracil, a widely used chemotherapeutic drug. Herein, the possibility of adjusting final properties by means of modifying the preparation conditions was investigated. The prepared composite nanogels are characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). In light of this tunable drug-loading capability, swelling behaviour, and cytotoxicity, these composite nanogels could be highly attractive as drug reservoirs.
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Affiliation(s)
- Catalina Paula Spatarelu
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Anita-Laura (Radu) Chiriac
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Bogdan Cursaru
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Tanta-Verona Iordache
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Ana-Mihaela Gavrila
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Crina-Thea Cojocaru
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Razvan-Edward Botez
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Bogdan Trica
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Andrei Sarbu
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
| | - Mircea Teodorescu
- Department of Bioresources and Polymer Science, Faculty of Applied Chemistry and Materials Science, University “Politehnica” of Bucharest, 1–7 Gh. Polizu Street, 1st District, 011061 Bucharest, Romania;
| | - Vlad Tofan
- Cantacuzino National Institute of Research-Development for Microbiology and Immunology (CNIR), 103 Spl. Independenţei, 5th District, 011061 Bucharest, Romania;
| | | | - Anamaria Zaharia
- Advanced Polymer Materials and Polymer Recycling Group, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 6th District, P.O. Box 35/174, 060021 Bucharest, Romania; (C.P.S.); (B.C.); (T.-V.I.); (A.-M.G.); (C.-T.C.); (R.-E.B.); (B.T.); (A.S.)
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18
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Bidaguren A, Mendicute J, Madarieta I, Garagorri N. Confocal and Histological Features After Poly(Ethylene Glycol) Diacrylate Corneal Inlay Implantation. Transl Vis Sci Technol 2019; 8:39. [PMID: 31867140 PMCID: PMC6922274 DOI: 10.1167/tvst.8.6.39] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 02/14/2019] [Accepted: 10/24/2019] [Indexed: 11/24/2022] Open
Abstract
Purpose To evaluate the in vivo biocompatibility of photopolymerized poly(ethylene glycol) diacrylate (PEGDA) intrastromal inlays in rabbit corneas. Methods Sixty-three eyes of 42 New Zealand rabbits were included. Manual intrastromal pockets were dissected in 42 eyes. PEGDA inlays were obtained using a specifically designed photomask and were inserted in the intrastromal pocket of 21 eyes (inlay group); the remaining 21 right eyes did not receive any implant (pocket-only group). Twenty-one eyes with no intervention were used as controls. In vivo confocal microscopy (IVCM) was performed at every visit. After 2 months, rabbits were sacrificed and corneas removed for histological analysis. Results Corneas remained clear in all but two animals, and five cases of corneal neovascularization were seen (P = 0.2). Inlays remained stable without evidence of lateral or anterior migration, and no other complications were observed. No changes in anterior and posterior keratocyte density (P = 0.3 and P = 0.1, respectively) or endothelial cell density (P = 0.23) were observed between groups during the study time by IVCM. On pathology samples, thinning of the epithelium over the inlay area and epithelial hyperplasia over the edges were observed. A polygonal empty space with no evidence of PEGDA hydrogel within the midstroma was seen in the inlay group. Keratocytes were normal in shape and number in the vicinity of the PEGDA implant area. Conclusions Photopolymerized PEGDA intrastromal inlays have shown relatively good safety and stability in rabbit corneas. Inlays were biostable in the corneal environment and remained transparent during follow up. Translational Relevance The investigated PEGDA is promising for the development of biocompatible intrastromal implants.
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19
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Nam C, Yoon J, Ryu SA, Choi CH, Lee H. Water and Oil Insoluble PEGDA-Based Microcapsule: Biocompatible and Multicomponent Encapsulation. ACS Appl Mater Interfaces 2018; 10:40366-40371. [PMID: 30422614 DOI: 10.1021/acsami.8b16876] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite the recent development in various materials capable of encapsulating biomolecules, there exist limited reports on multicomponent encapsulation in biocompatible microcapsules. In this letter, we utilize the molecular weight dependent solubility of poly(ethylene glycol) diacrylate (PEGDA) and droplet microfluidics to achieve direct encapsulation of both hydrophilic and hydrophobic cargoes in PEG microcapsules. By using PEGDA 250 as the middle phase, we demonstrate that these PEGDA-based microcapsules allow simultaneous encapsulation of both hydrophilic and hydrophobic cargoes. We further confirm the validity of this approach by demonstrating that complex biomolecule such as protein can be effectively encapsulated within these PEGDA-based microcapsules.
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Affiliation(s)
- Changwoo Nam
- Department of Chemical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu , Pohang , Gyeongbuk 37673 , Korea
| | - Jongsun Yoon
- Department of Chemical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu , Pohang , Gyeongbuk 37673 , Korea
| | - Sang A Ryu
- Department of Chemical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu , Pohang , Gyeongbuk 37673 , Korea
| | - Chang-Hyung Choi
- Division of Cosmetic Science and Technology , Daegu Haany University , 1 Haanydaero , Gyeongsan , Gyeongbuk 38610 , Korea
| | - Hyomin Lee
- Department of Chemical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu , Pohang , Gyeongbuk 37673 , Korea
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Chen JY, Hwang JV, Ao-Ieong WS, Lin YC, Hsieh YK, Cheng YL, Wang J. Study of Physical and Degradation Properties of 3D-Printed Biodegradable, Photocurable Copolymers, PGSA- co-PEGDA and PGSA- co-PCLDA. Polymers (Basel) 2018; 10:E1263. [PMID: 30961188 PMCID: PMC6401713 DOI: 10.3390/polym10111263] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 10/15/2018] [Revised: 11/05/2018] [Accepted: 11/09/2018] [Indexed: 11/26/2022] Open
Abstract
As acrylated polymers become more widely used in additive manufacturing, their potential applications toward biomedicine also raise the demand for biodegradable, photocurable polymeric materials. Polycaprolactone diacrylate (PCLDA) and poly(ethylene glycol) diacrylate (PEGDA) are two popular choices of materials for stereolithography (SLA) and digital light processing additive manufacturing (DLP-AM), and have been applied to many biomedical related research. However, both materials are known to degrade at a relatively low rate in vivo, limiting their applications in biomedical engineering. In this work, biodegradable, photocurable copolymers are introduced by copolymerizing PCLDA and/or PEGDA with poly(glycerol sebacate) acrylate (PGSA) to form a network polymer. Two main factors are discussed: the effect of degree of acrylation in PGSA and the weight ratio between the prepolymers toward the mechanical and degradation properties. It is found that by blending prepolymers with various degree of acrylation and at various weight ratios, the viscosity of the prepolymers remains stable, and are even more 3D printable than pure substances. The formation of various copolymers yielded a database with selectable Young's moduli between 0.67⁻10.54 MPa, and the overall degradation rate was significantly higher than pure substance. In addition, it is shown that copolymers fabricated by DLP-AM fabrication presents higher mechanical strength than those fabricated via direct UV exposure. With the tunable mechanical and degradation properties, the photocurable, biodegradable copolymers are expected to enable a wider application of additive manufacturing toward tissue engineering.
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Affiliation(s)
- June-Yo Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Joanne V Hwang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Wai-Sam Ao-Ieong
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Yung-Che Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Yi-Kong Hsieh
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
- Department of Biomedical Engineering and Environment Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Yih-Lin Cheng
- Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
- R&D Center for Membrane Technology, Chun Yuan Christian University, Taoyuan 32023, Taiwan.
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McAvoy K, Jones D, Thakur RRS. Synthesis and Characterisation of Photocrosslinked poly(ethylene glycol) diacrylate Implants for Sustained Ocular Drug Delivery. Pharm Res 2018; 35:36. [PMID: 29368249 PMCID: PMC5784000 DOI: 10.1007/s11095-017-2298-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [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: 09/08/2017] [Accepted: 11/01/2017] [Indexed: 01/20/2023]
Abstract
Purpose To investigate the sustained ocular delivery of small and large drug molecules from photocrosslinked poly(ethylene glycol) diacrylate (PEGDA) implants with varying pore forming agents. Methods Triamcinolone acetonide and ovalbumin loaded photocrosslinked PEGDA implants, with or without pore-forming agents, were fabricated and characterised for chemical, mechanical, swelling, network parameters, as well as drug release and biocompatibility. HPLC-based analytical methods were employed for analysis of two molecules; ELISA was used to demonstrate bioactivity of ovalbumin. Results Regardless of PEGDA molecular weight or pore former composition all implants loaded with triamcinolone acetonide released significantly faster than those loaded with ovalbumin. Higher molecular weight PEGDA systems (700 Da) resulted in faster drug release of triamcinolone acetonide than their 250 Da counterpart. All ovalbumin released over the 56-day time period was found to be bioactive. Increasing PEGDA molecular weight resulted in increased system swelling, decreased crosslink density (Ve), increased polymer-water interaction parameter (χ), increased average molecular weight between crosslinks (Mc) and increased mesh size (ε). SEM studies showed the porosity of implants increased with increasing PEGDA molecular weight. Biocompatibility showed both PEGDA molecular weight implants were non-toxic when exposed to retinal epithelial cells over a 7-day period. Conclusion Photocrosslinked PEGDA implant based systems are capable of controlled drug release of both small and large drug molecules through adaptations in the polymer system network. We are currently continuing evaluation of these systems as potential sustained drug delivery devices.
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Affiliation(s)
- Kathryn McAvoy
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland, BT9 7BL, UK
| | - David Jones
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland, BT9 7BL, UK
| | - Raghu Raj Singh Thakur
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland, BT9 7BL, UK. .,School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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Pelras T, Glass S, Scherzer T, Elsner C, Schulze A, Abel B. Transparent Low Molecular Weight Poly(Ethylene Glycol) Diacrylate-Based Hydrogels as Film Media for Photoswitchable Drugs. Polymers (Basel) 2017; 9:E639. [PMID: 30965940 PMCID: PMC6418822 DOI: 10.3390/polym9120639] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 10/10/2017] [Revised: 11/16/2017] [Accepted: 11/18/2017] [Indexed: 12/17/2022] Open
Abstract
Hydrogels have shown a great potential as materials for drug delivery systems thanks to their usually excellent bio-compatibility and their ability to trap water-soluble organic molecules in a porous network. In this study, poly(ethylene glycol)-based hydrogels containing a model dye were synthesized by ultraviolet (UV-A) photopolymerization of low-molecular weight macro-monomers and the material properties (dye release ability, transparency, morphology, and polymerization kinetics) were studied. Real-time infrared measurements revealed that the photopolymerization of the materials was strongly limited when the dye was added to the uncured formulation. Consequently, the procedure was adapted to allow for the formation of sufficiently cured gels that are able to capture and later on to release dye molecules in phosphate-buffered saline solution within a few hours. Due to the transparency of the materials in the 400⁻800 nm range, the hydrogels are suitable for the loading and excitation of photoactive molecules. These can be uptaken by and released from the polymer matrix. Therefore, such materials may find applications as cheap and tailored materials in photodynamic therapy (i.e., light-induced treatment of skin infections by bacteria, fungi, and viruses using photoactive drugs).
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Affiliation(s)
- Théophile Pelras
- Leibniz-Institute of Surface Modification, Permoserstraβe 15, 04318 Leipzig, Germany.
- Key Center for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| | - Sarah Glass
- Leibniz-Institute of Surface Modification, Permoserstraβe 15, 04318 Leipzig, Germany.
| | - Tom Scherzer
- Leibniz-Institute of Surface Modification, Permoserstraβe 15, 04318 Leipzig, Germany.
| | - Christian Elsner
- Leibniz-Institute of Surface Modification, Permoserstraβe 15, 04318 Leipzig, Germany.
| | - Agnes Schulze
- Leibniz-Institute of Surface Modification, Permoserstraβe 15, 04318 Leipzig, Germany.
| | - Bernd Abel
- Leibniz-Institute of Surface Modification, Permoserstraβe 15, 04318 Leipzig, Germany.
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Yanagawa F, Kaji H, Jang YH, Bae H, Yanan D, Fukuda J, Qi H, Khademhosseini A. Directed assembly of cell-laden microgels for building porous three-dimensional tissue constructs. J Biomed Mater Res A 2011; 97:93-102. [PMID: 21319297 DOI: 10.1002/jbm.a.33034] [Citation(s) in RCA: 45] [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] [Received: 11/29/2010] [Accepted: 12/03/2010] [Indexed: 11/08/2022]
Abstract
The organization of cells within a well-defined microenvironment is important in generating the resulting tissue function. However, the cellular organization within biodegradable scaffolds often does not resemble those of native tissues. In this study, we present directed assembly of microgels to organize cells for building porous 3D tissue constructs. Cell-laden microgels were generated by molding photocrosslinkable polyethylene glycol diacrylate within a poly(dimethyl siloxane) stencil. The resulting microgels were subsequently packed as individual layers (1 mm in height) on a glass substrate by removing the excess prepolymer solution around the microgels. These clusters were crosslinked and stacked on one another to fabricate thick 3D constructs that were greater than 1 cm in width and 3 mm in thickness. To generate pores within the engineered structures, sodium alginate microgels were integrated in the engineered constructs and used as a sacrificial template. These pores may be potentially useful for fabricating a vascular network to supply oxygen and nutrients to the engineered tissue constructs. This simple and versatile building approach may be a useful tool for various 3D tissue culture and engineering applications.
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Affiliation(s)
- Fumiki Yanagawa
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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Bae M, Divan R, Suthar KJ, Mancini DC, Gemeinhart RA. Fabrication of Poly(ethylene glycol) Hydrogel Structures for Pharmaceutical Applications using Electron beam and Optical Lithography. J Vac Sci Technol B Nanotechnol Microelectron 2010; 28:C6P24-C6P29. [PMID: 21423572 PMCID: PMC3060791 DOI: 10.1116/1.3517716] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Soft-polymer based microparticles are currently being applied in many biomedical applications, ranging from bioimaging and bioassays to drug delivery carriers. As one class of soft-polymers, hydrogels are materials, which can be used for delivering drug cargoes and can be fabricated in controlled sizes. Among the various hydrogel-forming polymers, poly(ethylene glycol) (PEG) based hydrogel systems are widely used due to their negligible toxicity and limited immunogenic recognition. Physical and chemical properties of particles (i.e., particle size, shape, surface charge, and hydrophobicity) are known to play an important role in cell-particle recognition and response. To understand the role of physicochemical properties of PEG-based hydrogel structures on cells, it is important to have geometrically precise and uniform hydrogel structures. To fabricate geometrically uniform structures, we have employed electron beam lithography (EBL) and ultra-violet optical lithography (UVL) using PEG or PEG diacrylate polymers. These hydrogel structures have been characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), optical microscopy, and attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) confirming control of chemistry, size, and shape.
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Affiliation(s)
- Misuk Bae
- Department of Biopharmaceutical Sciences, University of Illinois, 833 South Wood St., Chicago, IL 60612
| | | | | | | | - Richard A. Gemeinhart
- Department of Biopharmaceutical Sciences, University of Illinois, 833 South Wood St., Chicago, IL 60612
- Department of Bioengineering, University of Illinois, 833 South Wood St., Chicago, IL 60612
- Department of Ophthalmology and Visual Sciences, University of Illinois, 833 South Wood St., Chicago, IL 60612
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Fu Y, Kao WJ. Drug release kinetics and transport mechanisms from semi-interpenetrating networks of gelatin and poly(ethylene glycol) diacrylate. Pharm Res 2009; 26:2115-24. [PMID: 19554430 PMCID: PMC3809113 DOI: 10.1007/s11095-009-9923-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022]
Abstract
PURPOSE To elucidate the key parameters affecting solute transport from semi-interpenetrating networks (sIPNs) comprised of poly(ethylene glycol) diacrylate (PEGdA) and gelatin that are partially crosslinked, water-swellable and biodegradable. Effects of material compositions, solute size, solubility, and loading density have been investigated. MATERIALS AND METHODS sIPNs of following gelatin/PEGdA weight-to-weight ratios were prepared: 10:15, 10:20, 10:30, 15:15, 20:15. Five model solutes of different physicochemical properties were selected, i.e. silver sulfadiazine (AgSD), bupivacaine hydrochloride (Bup), sulfadiazine sodium (NaSD), keratinocyte growth factor (KGF), and bovine serum albumin conjugated with fluorescein isothiocyanate (BSA-FITC). Release studies were performed and the results were analyzed using three hydrogel based common theories (free volume, hydrodynamic and obstruction). RESULTS The release kinetics of model solutes was influenced by each factor under investigation. Specifically, the initial release rates and intra-gel diffusivity decreased with increasing PEGdA content or increasing solute molecular weight. However, the initial release rate and intra-gel diffusivity increased with increasing gelatin content or increasing solute water solubility, which contradicted with the classical hydrogel based solute transport theories, i.e. increasing polymer volume leads to decreased solute diffusivity within the gel. CONCLUSION This analysis provides structure-functional information of the sIPN as a potential therapeutic delivery matrix.
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Affiliation(s)
- Yao Fu
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave., Madison, Wisconsin 53705, USA
| | - Weiyuan John Kao
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave., Madison, Wisconsin 53705, USA
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
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