“…They can dissolve a variety of inorganic salts due to their high dipole moment and are thus proven to be excellent ion dissociators, useful for liquidizing solid salts or strong acids. − They have been reported as good ion carriers for electrochemical applications due to their lack of component ion-pair migration. − ZILs with suitable design could provide good target ion transporting abilities to overcome the disadvantages of conventional ILs, such as their low target ion transport number and lack of selectivity, as reported by Ohno and co-workers . Over the past decade, task specific sulfonate (SO 3 – ) functionalized zwitterionic imidazolium ionic liquids (SO 3 – ImZILs) have attracted great interest for use as ion conductive matrixes or electrolytes for batteries, ,− antifouling thin films, nanoparticle stabilizers, catalysts, − N-heterocyclic carbene ligands, − ion exchange membranes, , and for separation processes. , The oxygen atoms of the SO 3 – group are negatively charged and, in principle, can coordinate with positive ions. It has been reported that the SO 3 – groups are good exchange sites of lithium ions, because it is easy for Li + to associate or dissociate with the SO 3 – group and thus play a role in transfering lithium ions from one site to another. ,, The good proton exchange ability of SO 3 – ImZILs/brønsted acid mixtures is also noteworthy. , Recently, significant proton conduction efficiency was achieved for a liquid crystal (LC) of 4-(octadecyloxy) phenylsulfonic acid with the help of an aligning agent .…”