Used as a phase-transfer catalyst in organic synthesis, particularly in reactions requiring the transfer of anions between aqueous and organic phases. Its phosphonium structure enhances solubility in nonpolar solvents, making it effective in alkylation, oxidation, and polymerization reactions. The vinyl group allows for further functionalization or incorporation into polymer matrices, useful in developing conductive materials or supported catalysts. Also applied in electrochemical systems due to its ionic nature and thermal stability.