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Design of Self-Healing and Electrically Conductive Silk Fibroin-Based Hydrogels
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-05-10 00:00:00 , DOI: 10.1021/acsami.9b04871 Lichao Liu 1 , Yueying Han 1 , Shanshan Lv 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-05-10 00:00:00 , DOI: 10.1021/acsami.9b04871 Lichao Liu 1 , Yueying Han 1 , Shanshan Lv 1
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Self-healing and electrically conductive silk fibroin (SF)-based hydrogels were developed based on the dynamic assembly/disassembly nature of supramolecular complexes and the conductive nature of polypyrrole (PPy). The self-healing properties of the hydrogels were achieved through host–guest interactions between β-cyclodextrin and amino acid side chains (tyrosine, tryptophan, phenylalanine, and histidine) on SF. PPy deposition was achieved via in situ polymerization of pyrrole using ammonium persulfate as an oxidant and laccase as a catalyst. The PPy-coated hydrogels behaved as an elastomer and displayed excellent electrical properties, with adjustable electrical conductivities ranging from 0.8 ± 0.2 to (1.0 ± 0.3) × 10–3 S·cm–1. Furthermore, possibility of potential utilization of the hydrogels in electrochemistry applications as flexible yet self-healable electrode materials was explored. This study not only shows great potential in expanding the role of silk-based devices for various applications but also provides a useful approach for designing multifunctional self-healing protein-based hydrogels.
中文翻译：
自修复和导电丝素蛋白基水凝胶的设计
基于超分子复合物的动态组装/分解性质和聚吡咯（PPy）的导电性质，开发了基于自修复和导电的丝素蛋白（SF）的水凝胶。水凝胶的自我修复特性是通过SF上β-环糊精与氨基酸侧链（酪氨酸，色氨酸，苯丙氨酸和组氨酸）之间的客体相互作用实现的。PPy沉积是通过使用过硫酸铵作为氧化剂和漆酶作为催化剂通过吡咯进行原位聚合而实现的。涂有PPy的水凝胶可充当弹性体，并具有出色的电性能，可调节的电导率范围为0.8±0.2至（1.0±0.3）×10 –3 S·cm –1。此外，探索了水凝胶在电化学应用中作为柔性但可自愈的电极材料的潜在用途的可能性。这项研究不仅显示出扩大基于丝绸的装置在各种应用中的作用的巨大潜力，而且为设计多功能的基于蛋白质的自我修复水凝胶提供了有用的方法。
更新日期：2019-05-10
中文翻译：
自修复和导电丝素蛋白基水凝胶的设计
基于超分子复合物的动态组装/分解性质和聚吡咯（PPy）的导电性质，开发了基于自修复和导电的丝素蛋白（SF）的水凝胶。水凝胶的自我修复特性是通过SF上β-环糊精与氨基酸侧链（酪氨酸，色氨酸，苯丙氨酸和组氨酸）之间的客体相互作用实现的。PPy沉积是通过使用过硫酸铵作为氧化剂和漆酶作为催化剂通过吡咯进行原位聚合而实现的。涂有PPy的水凝胶可充当弹性体，并具有出色的电性能，可调节的电导率范围为0.8±0.2至（1.0±0.3）×10 –3 S·cm –1。此外，探索了水凝胶在电化学应用中作为柔性但可自愈的电极材料的潜在用途的可能性。这项研究不仅显示出扩大基于丝绸的装置在各种应用中的作用的巨大潜力，而且为设计多功能的基于蛋白质的自我修复水凝胶提供了有用的方法。
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