Used as a key intermediate in the synthesis of organic semiconductors, particularly in the development of conjugated polymers for organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). Its halogenated structure allows for selective cross-coupling reactions, enabling precise molecular engineering of π-conjugated systems. Commonly employed in Suzuki and Stille coupling reactions to build complex thiophene-based frameworks with enhanced charge transport properties. Also explored in the fabrication of high-performance thin-film transistors and flexible electronic devices due to its strong intermolecular interactions and planar molecular geometry.