Used as a key intermediate in the synthesis of high-performance organic semiconductors and hole-transport materials for optoelectronic devices. Its carbazole core combined with the aniline functionality provides excellent thermal stability and efficient charge transport, making it suitable for applications in organic light-emitting diodes (OLEDs) and perovskite solar cells. The bulky tert-butyl groups enhance solubility and prevent aggregation, improving film quality in device fabrication. Commonly employed in the development of emissive layer materials and as a building block for triplet harvesting in phosphorescent OLEDs.