Used as a high-performance host material in blue phosphorescent organic light-emitting diodes (PHOLEDs). Its strong electron-accepting nature and high triplet energy level make it ideal for efficient energy transfer in blue emitters, helping achieve high luminous efficiency and low driving voltages. The compound’s steric bulk and thermal stability improve film uniformity and device longevity in vacuum-deposited OLED layers. It is especially effective in deep-blue devices where energy confinement and stability are critical.