材料科学
离子液体
导线
胶粘剂
离子键合
导电体
离子
光致聚合物
自愈水凝胶
纳米技术
三氟甲磺酸
柔性电子器件
聚合物
化学工程
聚合
复合材料
高分子化学
化学
有机化学
工程类
催化作用
图层(电子)
作者
Yuchong Yang,Jiulei Zhou,Guoqiang Lu,Jiwei Sun,Liqun Tang
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2021-02-16
卷期号:3 (3): 1610-1617
被引量:40
标识
DOI:10.1021/acsapm.0c01442
摘要
Different from conductive hydrogels, ion gels, another kind of ionic conductor, possess excellent nonvolatility and anti-freezing capability, which have attracted increasing research interest in electronic field. Nevertheless, the poor mechanical property of ion gels severely hinders their application in flexible strain sensors. Herein, an ionic conductor composed of poly(acrylic acid) (PAA) within the ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM]TfO) was synthesized by facile one-pot photopolymerization. The resulting ion gel exhibited extreme stretchability (1200%), high transparency (over 90%), good environmental stability, and outstanding self-adhesion. The remarkable electromechanical characteristics, including fast response speed, high sensitivity, low electrical hysteresis, and autonomous repeatability, endow the PAA ion gel with superior strain-sensing capability to monitor various human motions. Additionally, the PAA ion gel displayed rapid response speed and high sensitivity to temperature change. Therefore, this multifunctional ion gel-based flexible bimodal sensor provides broad prospects for wearable electronics.
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