Used in organic light-emitting diodes (OLEDs) as a key building block for blue-emitting materials due to its strong electron-donating properties and high thermal stability. Its rigid structure helps improve device efficiency and color purity. Commonly employed in hole-transport layers and host materials in phosphorescent OLEDs. Also explored in perovskite solar cells as a dopant or interfacial layer to enhance charge transport and device performance. Widely utilized in research for developing new organic semiconductors and optoelectronic devices.