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Noguchi S, Kiyama R, Yoshida M, Marsudi MA, Kashimura N, Tadanaga K, Gong JP, Nonoyama T. Real-Space Visualization of Charged Polymer Network of Hydrogel by Double Network Strategy and Mineral Staining. NANO LETTERS 2024; 24:9088-9095. [PMID: 38979827 DOI: 10.1021/acs.nanolett.4c02559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Hydrogels consist of three-dimensional (3D) and complicated polymer networks that determine their physical properties. Among the methods for structural analyses of hydrogels, the real-space imaging of a polymer network of hydrogels on a nanometer scale is one of the optimal methods; however, it is highly challenging. In this study, we propose a direct observation method for cationic polymer networks using transmission electron microscopy (TEM). By combining the double network strategy and the mineral staining technique, we overcame the challenges of polymer aggregation and the low electron density of the polymer. An objective cationic network was incorporated into a neutral skeleton network to suppress shrinkage during subsequent staining. Titania mineralization along the cationic polymer strands provided sufficient electron density for the objective polymer network for TEM observation. This observation method enables the visualization of local structures in real space and plays a complementary role to scattering methods for soft matter structure analysis.
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Affiliation(s)
- Shinji Noguchi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan
| | - Ryuji Kiyama
- Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
- Laboratoire de Sciences et Ingénierie de la Matière Molle, CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France
| | - Masahiro Yoshida
- Graduate School of Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Maradhana Agung Marsudi
- Graduate School of Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Naohiro Kashimura
- Graduate School of Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Kiyoharu Tadanaga
- Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, 060-8628, Japan
| | - Jian Ping Gong
- Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Takayuki Nonoyama
- Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
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Zhao C, Liu G, Lin Y, Li X, Meng N, Wang X, Fu S, Yu J, Ding B. Diphylleia Grayi-Inspired Intelligent Temperature-Responsive Transparent Nanofiber Membranes. NANO-MICRO LETTERS 2024; 16:65. [PMID: 38175378 PMCID: PMC10766919 DOI: 10.1007/s40820-023-01279-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 11/08/2023] [Indexed: 01/05/2024]
Abstract
Nanofiber membranes (NFMs) have become attractive candidates for next-generation flexible transparent materials due to their exceptional flexibility and breathability. However, improving the transmittance of NFMs is a great challenge due to the enormous reflection and incredibly poor transmission generated by the nanofiber-air interface. In this research, we report a general strategy for the preparation of flexible temperature-responsive transparent (TRT) membranes, which achieves a rapid transformation of NFMs from opaque to highly transparent under a narrow temperature window. In this process, the phase change material eicosane is coated on the surface of the polyurethane nanofibers by electrospray technology. When the temperature rises to 37 °C, eicosane rapidly completes the phase transition and establishes the light transmission path between the nanofibers, preventing light loss from reflection at the nanofiber-air interface. The resulting TRT membrane exhibits high transmittance (> 90%), and fast response (5 s). This study achieves the first TRT transition of NFMs, offering a general strategy for building highly transparent nanofiber materials, shaping the future of next-generation intelligent temperature monitoring, anti-counterfeiting measures, and other high-performance devices.
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Affiliation(s)
- Cengceng Zhao
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Gaohui Liu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Yanyan Lin
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Xueqin Li
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Na Meng
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Xianfeng Wang
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Shaoju Fu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Jianyong Yu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Bin Ding
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China.
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Zhuo S, Liang Y, Wu Z, Zhao X, Han Y, Guo B. Supramolecular hydrogels for wound repair and hemostasis. MATERIALS HORIZONS 2024; 11:37-101. [PMID: 38018225 DOI: 10.1039/d3mh01403g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
The unique network characteristics and stimuli responsiveness of supramolecular hydrogels have rendered them highly advantageous in the field of wound dressings, showcasing unprecedented potential. However, there are few reports on a comprehensive review of supramolecular hydrogel dressings for wound repair and hemostasis. This review first introduces the major cross-linking methods for supramolecular hydrogels, which includes hydrogen bonding, electrostatic interactions, hydrophobic interactions, host-guest interactions, metal ligand coordination and some other interactions. Then, we review the advanced materials reported in recent years and then summarize the basic principles of each cross-linking method. Next, we classify the network structures of supramolecular hydrogels before outlining their forming process and propose their potential future directions. Furthermore, we also discuss the raw materials, structural design principles, and material characteristics used to achieve the advanced functions of supramolecular hydrogels, such as antibacterial function, tissue adhesion, substance delivery, anti-inflammatory and antioxidant functions, cell behavior regulation, angiogenesis promotion, hemostasis and other innovative functions in recent years. Finally, the existing problems as well as future development directions of the cross-linking strategy, network design, and functions in wound repair and hemostasis of supramolecular hydrogels are discussed. This review is proposed to stimulate further exploration of supramolecular hydrogels on wound repair and hemostasis by researchers in the future.
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Affiliation(s)
- Shaowen Zhuo
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Yongping Liang
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Zhengying Wu
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Xin Zhao
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Yong Han
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Baolin Guo
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710049, China
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Maji TK. Editorial for Forum on Applied Supramolecular Materials. ACS APPLIED MATERIALS & INTERFACES 2023; 15:25079-25081. [PMID: 37259285 DOI: 10.1021/acsami.3c05952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Ma S, Shi W, Li H, Zhang Y. Biomimetic mineralization of nacre-inspired multiple crosslinked PVA/CaAlg/SiO 2 membrane with simultaneously enhanced mechanical and separation properties. Int J Biol Macromol 2023; 234:123650. [PMID: 36791940 DOI: 10.1016/j.ijbiomac.2023.123650] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/01/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023]
Abstract
Inspired by the natural nacre structure, we propose a new strategy to fabricate mineralized, multiple crosslinked hydrogel membranes with the "rigid silica in soft polymer" nacre-like structure. In-situ SiO2 nanoparticles (NPs) and polyvinyl alcohol/sodium alginate (PVA/NaAlg) are used to simulate the rigid "bricks" and soft "mortar" compositions of nacre, respectively. The nacre-like mineralized (PVA/CaAlg/SiO2) membrane showed a higher tensile strength of 4.1 ± 0.08 MPa, excellent pure water flux of 170 ± 3 L/m2h, and an oil/water rejection rate of 99 %. The interwoven hierarchal structure, similar to nacre, was determined by SEM analysis. In addition, incorporating SiO2 NPs increases the anti-swelling, roughness, and hydrophilicity of the membranes. PVA/CaAlg/SiO2 membrane exhibited excellent superhydrophilicity (WCA value was 0°) and superoleophobicity underwater (OCA value was 162°). PVA/CaAlg/SiO2 membrane also showed excellent separation performance for water-soluble organic pollutants and can be used for dye separation with rejection efficiencies of 99.5 %, 99.1 %, and 98.3 % for Congo red (CR), Alizarin red (AR), and Sunset yellow (SY), respectively. Moreover, PVA/CaAlg/SiO2 membrane had outstanding long-term filtration and antifouling performance. The biomineralization-inspired structure provides a promising technique that can be used to prepare high-performance organic-inorganic membranes with great promise for wastewater separation application.
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Affiliation(s)
- Sisi Ma
- School of Textiles Engineering, Henan University of Engineering, Zhengzhou 450007, PR China.
| | - Wenying Shi
- School of Textiles Engineering, Henan University of Engineering, Zhengzhou 450007, PR China
| | - Hongbin Li
- School of Textiles Engineering, Henan University of Engineering, Zhengzhou 450007, PR China
| | - Yifeng Zhang
- Collaborative Innovation Center of Advanced Textile Equipment and Technology by MOE and Henan Provincial Government, Zhengzhou 450007, PR China
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Quan L, Xin Y, Wu X, Ao Q. Mechanism of Self-Healing Hydrogels and Application in Tissue Engineering. Polymers (Basel) 2022; 14:2184. [PMID: 35683857 PMCID: PMC9183126 DOI: 10.3390/polym14112184] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 12/26/2022] Open
Abstract
Self-healing hydrogels and traditional hydrogels both have three-dimensional polymeric networks that are capable of absorbing and retaining a large amount of water. Self-healing hydrogels can heal and restore damage automatically, and they can avoid premature failure of hydrogels caused by mechanical damage after implantation. The formation mechanism of self-healing hydrogels and the factors that hydrogels can load are various. Researchers can design hydrogels to meet the needs of different tissues through the diversity of hydrogels Therefore, it is necessary to summarize different self-healing mechanisms and different factors to achieve different functions. Here, we briefly reviewed the hydrogels designed by researchers in recent years according to the self-healing mechanism of water coagulation. Then, the factors for different functions of self-healing hydrogels in different tissues were statistically analyzed. We hope our work can provide effective support for researchers in the design process of self-healing hydrogel.
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Affiliation(s)
| | | | | | - Qiang Ao
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & Institute of Regulatory Science for Medical Device & National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China; (L.Q.); (Y.X.); (X.W.)
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Wen X, Wang H, Ren E, Wang S, Xu J. A robust and sensitive flexible strain sensor based on polyurethane cross-linked composite hydrogels for the detection of human motion. NEW J CHEM 2022. [DOI: 10.1039/d2nj03740h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyurethane cross-linked composite hydrogel and wireless Bluetooth module were assembled for the detection of human motion.
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Affiliation(s)
- Xiao Wen
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Haibo Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Erhui Ren
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Shuang Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Junhuai Xu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
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