Used in organic electronics as a building block for conjugated polymers and small molecules in organic semiconductors. Commonly applied in the synthesis of donor-acceptor materials for organic photovoltaics (OPV) and organic field-effect transistors (OFETs). Its aldehyde group allows for easy functionalization via cross-coupling or condensation reactions, enabling tailored modifications to tune electronic properties. Also employed in the development of fluorescent dyes and sensors due to its extended π-conjugation and light-emitting characteristics.