Used in the synthesis of organic semiconductors and conjugated polymers due to its extended π-conjugated system. Serves as a building block in dye and pigment production, particularly for high-performance photoactive materials. Employed in the development of sensors and optoelectronic devices, including organic light-emitting diodes (OLEDs) and photovoltaic cells. Its carboxylic acid group allows for easy functionalization or attachment to surfaces and biomolecules, making it useful in bioconjugation and surface modification applications. Also explored in metal-organic frameworks (MOFs) for sensing and catalysis.