Used as a key intermediate in the synthesis of organic semiconductors, particularly in the development of hole-transport materials for OLED (organic light-emitting diode) devices. Its rigid, bulky structure enhances thermal stability and film-forming properties in thin-film layers. Also employed in the preparation of fluorescent dyes and sensors due to its strong electron-donating characteristics and high quantum yield. Commonly found in research related to photovoltaic materials and perovskite solar cells where efficient charge transport is critical.