Department of Chemistry, Renmin University of China, Beijing, 100872, China.
Nat Commun. 2019 Feb 1;10(1):547. doi: 10.1038/s41467-019-08433-5.
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]PF 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.
由离子液体组成的液体传感器作为柔性和自修复电子产品中固态半导体的替代品正在兴起。然而，在意外损坏的情况下，流体性质可能会导致泄漏问题。在这里，我们提出了一种基于二元离子液体体系的液体传感器，其中[OMIm]PF 流动离子液体被另一种含偶氮苯的离子液晶[OMIm]AzoO 限制。这些晶体成分提供了足够的钉扎毛细力来固定流体成分，从而形成一个无泄漏可能的自由流动的液态产物。除了具有超高的温度灵敏度外，晶体限制的离子液体还结合了液体和固体的性能，使其可以拉伸、弯曲、自修复和重塑。就可重构性而言，这类特殊的离子液体被用作可以进行空间重组或自动修复的动态电路。
