2009年Thomas Strassner將芳香族引進咪唑型離子液體，發展出可調控且具有芳香族及烷鏈的離子液體(Tunable Aryl Alkyl Ionic Liquids，簡稱TAAILs)，藉由改變不同的拉、推電子基發現到TAAILs展現了與一般咪唑離子液體不一樣的物化性質，造成其原因為TAAILs分子內部具有誘導、立體以及中介效應，此類TAAILs可以用在許多應用，如能量儲存裝置、催化還有感應器上。而在本研究中，超過30種的TAAILs合成出來，更進一步探討在不同拉、推電子基時，其結構、熔點、熱裂解溫度、電位窗以及導電度的影響。其中發現到有些化合物熔點低於 -40 oC，在未來可望當作電池中的電解液。

Tunable aryl alkyl ionic liquids (TAAILs) refer to the ionic liquids containing aryl and alkyl substituent on the imidazolium cation. By introducing various electron withdrawing or donating substituents to the imidazolium ring and the aryl ring, the resulting TAAILs exhibit very different properties in comparison with the conventional imidazolium ionic liquids due to the introduced inductive, steric and mesomeric effects to the physical properties. These TAAILs can be tuned for various application purposes including energy storage devices, catalysis, and sensors. In this study, more than thirty TAAILs were synthesized and characterized in terms of their structures, melting point, decomposition point, electrochemical window and conductivity. The effects of the electron withdrawing/donating substituent were discussed. Some of these TAAILs show melting point lower than -40 oC, suggesting that they could be the candidate electrolyte for new batteries.

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