Understanding the structure-property relationship of ionic liquids is a key to the development of optimized materials for specific applications, such as CO2 capture, battery electrolytes, or lubricants. Using Cu(I)-catalyzed click chemistry as a synthetic platform, a library of triazolium-based ionic liquids has been accessed for the first time. These regioisomers of ionic liquids give insight into the structure property of these important materials. The effect of substituents and the effect of regioisomerization on thermal stability, CO2 solubility and inductive effects have been correlated.
