Used as a key intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its rigid fluorene backbone and amine functional groups make it ideal for constructing conjugated polymers and small molecules in organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). The compound contributes to high charge carrier mobility and thermal stability in device applications. Also employed in the development of hole-transport materials and as a building block for covalent organic frameworks (COFs) due to its planar structure and reactive amino sites.