Used in organic light-emitting diodes (OLEDs) as a key building block for blue emitters due to its strong electron-donating properties and high thermal stability. Commonly employed in the development of hole-transport materials and host compounds in phosphorescent OLEDs. Its bromine functionality allows for easy modification through cross-coupling reactions, making it valuable in synthesizing complex organic semiconductors. Also explored in perovskite solar cells as a dopant or interfacial layer to improve device efficiency and stability.