Widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in the development of conjugated materials. It serves as a key building block in the preparation of organic semiconductors, including those used in OLEDs (organic light-emitting diodes) and OPVs (organic photovoltaics). Its spirobifluorene core enhances thermal and morphological stability in thin-film devices, making it valuable in high-performance electronic materials. Commonly employed in the synthesis of polymers and small molecules for optoelectronic applications due to its excellent charge-transport properties and structural rigidity.