“…As the next great class of environmentally friendly solvents/catalysts, ILs are becoming increasingly prevalent in a wide range of fields and applications, such as catalysis, extraction, and separation, , owing to the negligible vapor pressure, high ionic conductivity, large temperature stability, and good solvent properties. − The alkyl chain lengths of the cations in ionic liquids (ILs) play a crucial role in determining their physicochemical properties. The investigations related to the effect of the alkyl chain length of imidazolium (alkylimidazolium) cations on the properties of imidazolium-based ILs have attracted considerable attention, including density, polarizability, surface tension, conductivity, nanosegregation, diffusion, and thermal stabilities. − The combination of cations and anions can adjust the properties for the targeted applications. , However, the synthesis of ILs is usually carried out in a batch way without the known kinetics and takes an empirically long reaction time, especially for the ILs with long alkyl chain, , which results in little emphasis on the reaction process intensification from the point of industrial view.…”