Widely used as a ligand in coordination chemistry, it forms stable complexes with various metal ions, enhancing catalytic activity in organic synthesis and polymerization reactions. It plays a role in developing metal-organic frameworks (MOFs) for gas storage and separation. Additionally, it is utilized in bioinorganic chemistry to mimic metalloenzyme active sites, aiding in understanding biological processes. Its application extends to sensors and fluorescence studies due to its ability to bind selectively with certain metal ions.