Used as a key intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its rigid, conjugated structure enhances electron transport properties, making it valuable in organic field-effect transistors (OFETs) and dye-sensitized solar cells. Also employed in the development of fluorescent probes and sensors due to its strong emission characteristics and ability to bind with metal ions or biomolecules. Its carboxylic acid functionality allows for easy functionalization and attachment to surfaces or polymers, expanding its use in material science and bioconjugation applications.