Used as an intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its rigid, conjugated structure enhances charge transport properties, making it valuable in the development of organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs). The chlorine functionality allows for further chemical modifications through cross-coupling reactions, enabling tailored electronic properties. Additionally, its diphenyl-substituted fluorene core contributes to thermal and oxidative stability, which is beneficial for durable device performance.