Used as a crosslinking agent in perovskite solar cells to improve device stability and efficiency by passivating defects at grain boundaries and interfaces. It helps enhance charge transport and reduces non-radiative recombination, leading to better photovoltaic performance. Also employed in surface modification of nanomaterials due to its bifunctional iodine termini, enabling controlled assembly and electronic coupling in molecular junctions. Additionally, serves as a bifunctional alkylating agent in organic synthesis for preparing polymers and cyclic compounds via nucleophilic substitution reactions.