Used as a key intermediate in the synthesis of high-performance organic semiconductors, particularly in organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs). Its rigid spirocyclic structure enhances thermal stability and reduces molecular aggregation, improving device efficiency and lifetime. Commonly employed in blue-emitting materials due to its wide bandgap properties. Also utilized in host materials for phosphorescent OLEDs to prevent exciton quenching. Its bromine substituents allow for further functionalization via cross-coupling reactions, enabling tailored electronic properties for advanced optoelectronic applications.