Used in organic electronics, particularly in the development of organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs), due to its extended π-conjugation and ability to form stable radical species. Its ethynyl group allows for efficient coupling reactions, making it a valuable building block in synthesizing conjugated polymers and small molecules for optoelectronic applications. Also employed in fluorescence-based sensors and as a probe in photophysical studies because of its strong blue emission and high quantum yield.