Used as a key building block in organic semiconductors and conductive polymers, enabling the synthesis of conjugated materials for organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). Its aldehyde functional groups allow for easy extension of π-conjugated systems through cross-coupling or condensation reactions, making it valuable in designing low-bandgap polymers and small molecules for optoelectronic devices. Also employed in the development of sensors and fluorescent probes due to its electron-rich structure and ability to form stable charge-transfer complexes.