Used as a key intermediate in the synthesis of advanced organic semiconductors and optoelectronic materials. Its rigid aromatic structure and functional hydroxyl and carboxylic acid groups enable coordination with metal ions, making it suitable for metal-organic frameworks (MOFs) with potential in gas sensing and storage. Also employed in the development of fluorescent probes due to its strong π-conjugated system and ability to exhibit tunable emission properties. Additionally, serves as a building block in designing nonlinear optical materials and high-performance polymers for specialty coatings and thermal stabilization.