Lerch Swantje, Strassner Thomas
Physikalische Organische Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany.
Chemistry. 2021 Nov 5;27(62):15554-15557. doi: 10.1002/chem.202102545. Epub 2021 Oct 4.
Tunable aryl alkyl ionic liquids (TAAILs) based on the imidazolium cation were first reported in 2009. Since then, a series of TAAILs with different properties due to the electron-donating or -withdrawing effect of the substituents at the aryl ring has been developed. Herein, a wide variety of those ionic liquids (ILs) is presented in terms of their cation structure. The authors synthesized ILs containing the bromide or bis(trifluoromethane)sulfonimide anion and 1-aryl-3-alkyl imidazolium cations with various substituents in the ortho and/ or para position of the phenyl ring and alkyl chains of different lengths varying from butyl to dodecyl. The differences of their physical properties (melting point, thermal decomposition, viscosity, electro-chemical window) of these ILs are reported according to their structure.
基于咪唑阳离子的可调谐芳基烷基离子液体（TAAILs）于2009年首次被报道。从那时起，由于芳环上取代基的供电子或吸电子效应，一系列具有不同性质的TAAILs被开发出来。在此，根据阳离子结构展示了各种各样的离子液体（ILs）。作者合成了含有溴化物或双（三氟甲烷）磺酰亚胺阴离子以及在苯环的邻位和/或对位带有各种取代基且烷基链长度从丁基到十二烷基不等的1-芳基-3-烷基咪唑阳离子的离子液体。根据这些离子液体的结构，报道了它们物理性质（熔点、热分解、粘度、电化学窗口）的差异。
