Dynamic but Mechanically Robust and Ultrafast Healable Ionogel for Nerve Fiber-inspired Signal Transmitter.journal of materials chemistry A.2022.Ping Liu, Danfeng Pei, Yongpeng Wu, Mingjie Li, xihui zhao and Chaoxu Li-成果-仿生智能材料研究组  
Dynamic but Mechanically Robust and Ultrafast Healable Ionogel for Nerve Fiber-inspired Signal Transmitter.journal of materials chemistry A.2022.Ping Liu, Danfeng Pei, Yongpeng Wu, Mingjie Li, xihui zhao and Chaoxu Li
wangsuxv 2月前 143


Mechanical robustness in combination of ultrafast healablity has been in pursuit for soft conductors in applications of flexible electronics. Inspired by the unique dense H-bond arrays in spider silk and the rapid diselenide metathesis under visible light irradiation, herein, a dynamic, robust and ultrafast healable supramolecular poly(urethane-urea) ionogel (PUSeIL) was designed. The resultant PUSeIL exhibited a tensile strength of 22 MPa, a toughness of 109.8 MJ m−3 and an ultrafast self-healability in 30 s. Besides self-welding and recyclability, its tunable stress relaxation deriving from the excellent spatial controllablity of diselenide metathesis under light irradiation, further provided a possibility for patterns with variable structural colors and the flat-to-3D shape-morphing. When serving as nerve fiber-inspired signal transmitter by mimicking the structure and functions of the myelinated axon, its faithful and high throughput information interaction, ultrafast self-healablity and long-term working stability enabled PUSeIL as a communication unit for message and energy delivery. Thus, this study not only provides a new platform of designing dynamic, mechanical robust and ultrafast self-healing ionic conductivity, but also promises the facileness of building damage-endurable soft electronics and applying to human-machine interfaces.

DOI:10.1039/D2TA06884B


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