Used primarily as a hole-transporting material in organic light-emitting diodes (OLEDs). Its molecular structure supports efficient hole injection and transport, enhancing device efficiency and stability. Commonly employed in multilayer OLED architectures, especially in blue-emitting devices, where balanced charge transport is critical. Also explored in stacked OLEDs and tandem devices due to its excellent thermal stability and film-forming properties. Its high glass transition temperature helps maintain performance under prolonged operation.