Issue 2, 2024

Facile fabrication of a stretchable, stable, and self-adhesive poly(ionic liquid) as a flexible sensor

Abstract

Although poly(ionic liquid)s (PILs) are alternative materials to flexible hydrogel sensors owing to their unique characteristics such as nonvolatility, high conductivity, and excellent temperature tolerance, their weak mechanical properties greatly limit their application in flexible sensors. In this study, a PIL with high stretchability, excellent stability, and remarkable self-adhesive property was fabricated by the in situ photopolymerization of 1-vinyl-3-butylimidazolium bis(trifluoromethylsulfonylimide) ([VBIM]TFSI) and butyl acrylate (BA) in 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonylimide) ([BMIM]TFSI). The outstanding electromechanical properties, including instant response, improved stretchability, low hysteresis, and prominent repeatability, of the resulting PIL imparted it with strain-sensing capacity for recognizing a variety of physical deformations, such as human joint activity and pulse. Moreover, since the change in the conductivity of PILs with temperature conforms to the Vogel–Tamman–Fulcher (VTF) equation, the PIL could be utilized as a high-performance temperature sensor. Thus, this work provides a facile strategy for fabricating a high-performance bimodal PIL sensor, which has broad prospects for flexible electronics.

Graphical abstract: Facile fabrication of a stretchable, stable, and self-adhesive poly(ionic liquid) as a flexible sensor

Supplementary files

Article information

Article type
Paper
Submitted
10 Aug 2023
Accepted
02 Dec 2023
First published
05 Jan 2024
This article is Open Access
Creative Commons BY-NC license

RSC Appl. Polym., 2024,2, 205-213

Facile fabrication of a stretchable, stable, and self-adhesive poly(ionic liquid) as a flexible sensor

J. Sun, S. Zhou, Z. Zhao, F. Zhang, Z. Guo, S. Liu and Y. Lu, RSC Appl. Polym., 2024, 2, 205 DOI: 10.1039/D3LP00137G

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