Used as a key intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its structure supports the formation of conjugated systems, making it valuable in the development of organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). The bromine functionality allows for further modification via cross-coupling reactions such as Suzuki or Heck reactions, enabling the construction of complex aromatic frameworks. Also employed in the preparation of fluorescent dyes and sensors due to its rigid, planar fluorene backbone which enhances photostability and emission properties.