1. Photoreversible control over ionic conductivity of coumarin-containing poly(ionic liquid)-based solid electrolyte
- Author
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Wangjie Xu, Ming Zhang, Yijun Chen, Qinghua Tian, Xianjing Zhou, Li Zhang, Xinping Wang, and Wei Zhang
- Subjects
smart polymers ,poly(ionic liquid)s ,ionic conductivity modulation ,polymer membrane ,mechanical properties ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Chemical technology ,TP1-1185 - Abstract
Poly(ionic liquid)s (PILs) are promising candidates used as solid electrolytes because of their excellent electrochemical properties and improved processability. Introducing light-sensitive groups to PILs appears as an attractive strategy for developing novel smart PIL-based electronic devices. In this work, a new photoresponsive PIL-based solid electrolyte was prepared by blending PILs containing coumarin groups (COU-PILs) with polyvinylidene fluoride hexafluoropropylene. It was found that the ionic conductivity of COU-PIL solid electrolytes (COU-PIL SEs) can be reversibly modulated upon alternative 365 and 254 nm light irradiation. In particular, the COU-PIL SEs exhibit a highly reversible and repeatable manipulation of ionic conductivity with a maximum conductivity modulation of 95%. This reversible control over ionic conductivity is attributed to the photodimerization/photocleavage behavior of the coumarin groups.
- Published
- 2023
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