Used as a key intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its bromine functionality allows for palladium-catalyzed cross-coupling reactions, enabling the construction of complex conjugated systems. Commonly employed in the development of organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs) due to its rigid, planar fluorene backbone which enhances charge transport and thermal stability. Also utilized in the preparation of ligands for metal-organic complexes and in polymer chemistry to introduce fluorene units into macromolecular structures.