Used as a key intermediate in the synthesis of conjugated organic materials for optoelectronic devices such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). Its ethynyl group enables efficient carbon-carbon bond formation via Sonogashira coupling, allowing extension of π-conjugated systems. The dimethylamino group acts as a strong electron-donating moiety, making it valuable in donor-acceptor type molecules for nonlinear optics and fluorescent probes. Also employed in the preparation of functional polymers and molecular wires due to its rigid structure and electronic properties.