Three new redox-active ionic salts have been synthesised based on 1,4-dimethoxybenzene (1) and 2,5-di-tert-butyl-1,4-dimethoxybenzene (2 and 3). These imidazolium salts are the first organic redox-active groups to be incorporated into an ionic liquid structure. There are no negative effects on the transport properties by incorporating 2,5-di-tert-butyl-1,4-dimethoxybenzene into an electroactive imidazolium salt. The thermal stability and oxidation potential have been increased.