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Chen X, Cui J, Liu Z, Wang Y, Li M, Zhang J, Pan S, Wang M, Bao C, Wei Q. Polyacrylamide/sodium alginate/sodium chloride photochromic hydrogel with high conductivity, anti-freezing property and fast response for information storage and electronic skin. Int J Biol Macromol 2024; 268:131972. [PMID: 38697436 DOI: 10.1016/j.ijbiomac.2024.131972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 04/07/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
Photochromic hydrogels have promising prospects in areas such as wearable device, information encryption technology, optoelectronic display technology, and electronic skin. However, there are strict requirements for the properties of photochromic hydrogels in practical engineering applications, especially in some extreme application environments. The preparation of photochromic hydrogels with high transparency, high toughness, fast response, colour reversibility, excellent electrical conductivity, and anti-freezing property remains a challenge. In this study, a novel photochromic hydrogel (PAAm/SA/NaCl-Mo7) was prepared by loading ammonium molybdate (Mo7) and sodium chloride (NaCl) into a dual-network hydrogel of polyacrylamide (PAAm) and sodium alginate (SA) using a simple one-pot method. PAAm/SA/NaCl-Mo7 hydrogel has excellent conductivity (175.9 S/cm), water retention capacity and anti-freezing properties, which can work normally at a low temperature of -28.4 °C. In addition, the prepared PAAm/SA/NaCl-Mo7 hydrogel exhibits fast response (<15 s), high transparency (>70 %), good toughness (maximum elongation up to 1500 %), good cyclic compression properties at high compressive strains (60 %), good biocompatibility (78.5 %), stable reversible discolouration and excellent sensing properties, which can be used for photoelectric display, information storage and motion monitoring. This work provides a new inspiration for the development of flexible electronic skin devices.
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Affiliation(s)
- Xiaohu Chen
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Jiashu Cui
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Zhisheng Liu
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Yanen Wang
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China.
| | - Mingyang Li
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Juan Zhang
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Siyu Pan
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Mengjie Wang
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Chengwei Bao
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| | - Qinghua Wei
- Department of Indurstry and Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Bio-additive manufacturing university-enterprise joint research center of Shaanxi Province, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China.
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He B, Wang J, Xie M, Xu M, Zhang Y, Hao H, Xing X, Lu W, Han Q, Liu W. 3D printed biomimetic epithelium/stroma bilayer hydrogel implant for corneal regeneration. Bioact Mater 2022; 17:234-247. [PMID: 35386466 PMCID: PMC8965162 DOI: 10.1016/j.bioactmat.2022.01.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/11/2022] [Accepted: 01/17/2022] [Indexed: 12/11/2022] Open
Abstract
Corneal regeneration has always been a challenge due to its sophisticated structure and undesirable keratocyte-fibroblast transformation. Herein, we propose 3D printing of a biomimetic epithelium/stroma bilayer implant for corneal regeneration. Gelatin methacrylate (GelMA) and long-chain poly(ethylene glycol) diacrylate (PEGDA) are blended to form a two-component ink, which can be printed to different mechanically robust programmed PEGDA-GelMA objects by Digital Light Processing (DLP) printing technology, due to the toughening effect of crystalline crosslinks from long-chain PEGDA on GelMA hydrogel after photo-initiated copolymerization. The printed PEGDA-GelMA hydrogels support cell adhesion, proliferation, migration, meanwhile demonstrating a high light transmittance, and an appropriate swelling degree, nutrient permeation and degradation rate. A bi-layer dome-shaped corneal scaffold consisting of rabbit corneal epithelial cells (rCECs)-laden epithelia layer and rabbit adipose-derived mesenchymal stem cells (rASCs)-laden orthogonally aligned fibrous stroma layer can be printed out with a high fidelity and robustly surgical handling ability. This bi-layer cells-laden corneal scaffold is applied in a rabbit keratoplasty model. The post-operative outcome reveals efficient sealing of corneal defects, re-epithelialization and stromal regeneration. The concerted effects of microstructure of 3D printed corneal scaffold and precisely located cells in epithelia and stroma layer provide an optimal topographical and biological microenvironment for corneal regeneration. Crystalline microphase of long PEGDA is employed to toughen GelMA hydrogel. A bi-layer dome-shaped robust hydrogel-based biomimetic corneal scaffold is printed. The 3D printed cornea implant can efficiently repair the rabbits' corneal defect.
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Oderinde O, Ejeromedoghene O, Fu G. Synthesis and properties of
low‐cost
, photochromic transparent hydrogel based on ethaline‐assisted binary tungsten
oxide‐molybdenum
oxide nanocomposite for optical memory applications. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Olayinka Oderinde
- School of Chemistry and Chemical Engineering Southeast University, Jiulonghu Campus Nanjing China
- Department of Chemical Sciences, Faculty of Basic Medical and Applied Sciences Lead City University Ibadan Nigeria
| | - Onome Ejeromedoghene
- School of Chemistry and Chemical Engineering Southeast University, Jiulonghu Campus Nanjing China
| | - Guodong Fu
- School of Chemistry and Chemical Engineering Southeast University, Jiulonghu Campus Nanjing China
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Long S, Ye Z, Jin Y, Huang J, Huang Y, Liao Y, Li X. High-Performance Photochromic Hydrogels for Rewritable Information Record. Macromol Rapid Commun 2021; 42:e2000701. [PMID: 33491838 DOI: 10.1002/marc.202000701] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/25/2020] [Indexed: 12/20/2022]
Abstract
Rewritable information record materials usually demand not only reversibly stimuli-responsive ability, but also strong mechanical properties. To achieve one photochromic hydrogel with super-strong mechanical strength, hydrophobic molecule spiropyran (SP) has been introduced into a copolymer based on ion-hybrid crosslink. The hydrogels exhibit both photoinduced reversible color changes and excellent mechanical properties, i.e., the tensile stress of 3.22 MPa, work of tension of 12.8 MJ m-3 , and modulus of elasticity of 8.6 MPa. Moreover, the SP-based Ca2+ crosslinked hydrogels can be enhanced further when exposed to UV-light via ionic interaction coordination between Ca2+ , merocyanine (MC) with polar copolymer chain. In particular, hydrogels have excellent reversible conversion behavior, which can be used to realize repeatable writing of optical information. Thus, the novel design is demonstrated to support future applications in writing repeatable optical information, optical displays, information storage, artificial intelligence systems, and flexible wearable devices.
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Affiliation(s)
- Shijun Long
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, P. R. China
| | - Zhihua Ye
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, P. R. China
| | - Yiqi Jin
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, P. R. China
| | - Jiacheng Huang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, P. R. China
| | - Yiwan Huang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, P. R. China
| | - Yonggui Liao
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Xuefeng Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, P. R. China
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