Crystal-confined freestanding ionic liquids for reconfigurable and repairable electronics

Naiwei Gao, Yonglin He, Xinglei Tao, Xiao-Qi Xu, Xun Wu and Yapei Wang ()
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Naiwei Gao: Renmin University of China
Yonglin He: Renmin University of China
Xinglei Tao: Renmin University of China
Xiao-Qi Xu: Renmin University of China
Xun Wu: Renmin University of China
Yapei Wang: Renmin University of China

Nature Communications, 2019, vol. 10, issue 1, 1-11

Abstract: Abstract Liquid sensors composed of ionic liquids are rising as alternatives to solid semiconductors for flexible and self-healing electronics. However, the fluidic nature may give rise to leakage problems in cases of accidental damages. Here, we proposed a liquid sensor based on a binary ionic liquid system, in which a flowing ionic liquid [OMIm]PF6 is confined by another azobenzene-containing ionic liquid crystalline [OMIm]AzoO. Those crystal components provide sufficient pinning capillary force to immobilize fluidic components, leading to a freestanding liquid-like product without the possibility of leakage. In addition to owning ultra-high temperature sensitivity, crystal-confined ionic liquids also combine the performances of both liquid and solid so that it can be stretched, bent, self-healed, and remolded. With respect to the reconfigurable property, this particular class of ionic liquids is exploited as dynamic circuits which can be spatially reorganized or automatically repaired.

Date: 2019
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DOI: 10.1038/s41467-019-08433-5

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