Used as a key intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its structure supports hole-transport properties, making it valuable in OLED (organic light-emitting diode) devices, particularly in emissive layers or host materials for blue phosphorescent OLEDs. The compound’s carbazole moiety enhances thermal stability and film-forming ability, while the pyridine and tert-butyl groups improve solubility and electron-transport characteristics. It is also employed in the development of photovoltaic cells and perovskite solar cells as a dopant-free hole-transport material. Its hydroxyl group allows for further functionalization, enabling tailored modifications for specific device performance requirements.