Used as a high-performance hole-transport material in organic light-emitting diodes (OLEDs). Its rigid, twisted molecular structure enhances thermal stability and prevents crystallization, which helps maintain device efficiency over time. It is particularly effective in blue OLEDs, where it improves luminous efficiency and operational lifetime by facilitating balanced charge injection and reducing exciton quenching. Also employed in phosphorescent OLEDs due to its suitable HOMO energy level alignment with common emissive layers.