Used in organic electronics as a building block for high-performance semiconducting materials. Its rigid spiro-linked structure enhances thermal stability and prevents close packing, improving film morphology in organic field-effect transistors (OFETs). Also employed in the synthesis of blue-emitting materials for OLEDs due to its ability to maintain wide band gaps. Shows promise in perovskite solar cells as a dopant-free hole-transport material, offering improved device stability and efficiency.