Used as a key intermediate in organic synthesis, particularly in the preparation of conjugated polymers and organic electronic materials. Its acetylene functionality enables coupling reactions, such as Sonogashira coupling, to build extended π-conjugated systems. Commonly applied in the development of organic light-emitting diodes (OLEDs), field-effect transistors (OFETs), and photovoltaic devices due to its ability to enhance electron delocalization and improve charge transport properties. Also employed in the synthesis of liquid crystals and pharmaceuticals where rigid, planar molecular architectures are required.