Used as a key intermediate in organic light-emitting diodes (OLEDs), particularly in the electron-transport layer or as a host material in blue phosphorescent devices. Its spiro structure provides high thermal stability and prevents crystallization, which enhances device longevity. The bromine functional group allows for further chemical modification through cross-coupling reactions, enabling tailored electronic properties for improved efficiency in optoelectronic applications. Commonly employed in research and development of advanced display technologies and solid-state lighting.