Used as an intermediate in organic synthesis, particularly in the preparation of functionalized fluorene derivatives for optoelectronic materials. It serves in the development of conjugated polymers and small molecules for organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). The bromine atoms allow for further cross-coupling reactions, such as Suzuki or Heck couplings, enabling the construction of complex aromatic systems. Also employed in the synthesis of fluorescent dyes and sensors due to the inherent rigidity and photostability of the fluorene backbone.