Used as a key building block in coordination chemistry, particularly in the synthesis of metal–organic frameworks (MOFs) and supramolecular architectures. Its aldehyde functional groups allow for further chemical modifications, such as condensation reactions to form Schiff bases, enabling the design of functional materials. Commonly employed in the development of luminescent sensors and catalysts due to its ability to chelate transition metals and enhance electronic properties. Also explored in dye-sensitized solar cells and photochemical devices where extended π-conjugation and metal binding improve performance.