Used as a ligand in coordination chemistry, particularly in the formation of metal complexes with transition metals such as copper, iron, and ruthenium. These complexes are often employed in catalysis, especially in reactions involving electron transfer processes. It is also utilized in the development of luminescent materials and sensors due to its ability to enhance the photophysical properties of metal ions. In addition, derivatives of this compound show potential in biological applications, including DNA binding and cleavage, making them relevant in medicinal chemistry and biochemical research. Its extended aromatic system improves stability and selectivity in complex formation, which is beneficial in designing selective catalysts and molecular probes.