Used in organic electronics as a building block for conjugated polymers and small molecules in organic semiconductors. Commonly employed in the synthesis of π-conjugated systems for organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). Its aldehyde group allows for easy functionalization via cross-coupling or condensation reactions, enabling fine-tuning of electronic properties. Also utilized in the development of fluorescent dyes and sensors due to its rigid, planar structure and light-emitting characteristics.