Used as a hole-transporting material in organic light-emitting diodes (OLEDs), this compound helps improve device efficiency and stability. Its rigid molecular structure supports high glass transition temperature, which enhances thermal stability in thin-film layers. Commonly found in blue phosphorescent OLEDs, it effectively transports holes while blocking electrons, contributing to balanced charge injection and higher luminous efficiency. Also employed in stacked OLED architectures due to its compatibility with adjacent organic layers and resistance to crystallization.