Used as a key building block in organic electronics, particularly in the synthesis of hole-transport materials for perovskite solar cells. Its triarylamine structure provides excellent charge transport properties and stability, making it suitable for use in optoelectronic devices. Also employed in the preparation of conjugated polymers and metal-organic frameworks where extended π-systems and nitrogen coordination sites are required. Its rigid, planar core enhances molecular stacking, beneficial for improving device efficiency in organic light-emitting diodes (OLEDs) and field-effect transistors (OFETs).