Dynamic and mechanically robust and ultrafast healable ionogel for nerve fiber-inspired signal transmitter,Journal of Materials Chemistry A

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Dynamic and mechanically robust and ultrafast healable ionogel for nerve fiber-inspired signal transmitter
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-11-15 , DOI: 10.1039/d2ta06884b
Ping Liu _{1,

2} , Danfeng Pei _{2,

3} , Yongpeng Wu ₂ , Mingjie Li _{2,

3} , Xihui Zhao ₁ , Chaoxu Li _{2,

3}

Affiliation

Mechanical robustness in combination with ultrafast healability has been pursued 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 derived from the excellent spatial controllability of diselenide metathesis under light irradiation further provided a possibility for patterns with variable structural colors and flat-to-3D shape-morphing. When serving as the nerve fiber-inspired signal transmitter by mimicking the structure and functions of the myelinated axon, its faithful and high throughput information interaction, ultrafast self-healability, 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 for designing dynamic, mechanically robust, and ultrafast self-healing ionic conductivity but also promises the facileness of building damage-endurable soft electronics and applying them to human–machine interfaces.

中文翻译：

用于神经纤维信号发射器的动态和机械坚固且超快可修复的离子凝胶

柔性电子应用中的软导体一直在追求机械鲁棒性与超快自愈性的结合。受蜘蛛丝中独特的致密氢键阵列和可见光照射下快速二硒化物复分解的启发，本文设计了一种动态、坚固且超快可修复的超分子聚（氨基甲酸酯-脲）离子凝胶（PUSeIL）。所得 PUSeIL 的拉伸强度为 22 MPa，韧性为 109.8 MJ m ^-3，以及 30 秒内的超快自愈能力。除了自焊性和可回收性外，其可调应力松弛源于光照射下二硒化物复分解的出色空间可控性，进一步为具有可变结构颜色和平面到 3D 形状变形的图案提供了可能性。在模仿有髓轴突的结构和功能作为神经纤维信号传输器时，其忠实和高吞吐量的信息交互、超快的自修复性和长期工作稳定性使 PUSeIL 成为信息和能量的通信单元送货。因此，这项研究不仅为设计动态的、机械鲁棒的、

更新日期：2022-11-15

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