Used as an ionic liquid in organic synthesis, particularly in palladium-catalyzed cross-coupling reactions due to its ability to stabilize catalysts and enhance reaction efficiency. Serves as a precursor in the preparation of N-heterocyclic carbene (NHC) ligands, which are key in modern transition metal catalysis. Its tetrafluoroborate anion contributes to moderate thermal stability and solubility in polar organic solvents, making it suitable for use in electrochemical applications and as a solvent medium in specialized reactions. Also explored in materials science for designing functionalized imidazolium-based polymers with ionic conductivity.