Used primarily in organic synthesis, especially in Suzuki-Miyaura cross-coupling reactions, to construct biaryl compounds for optoelectronic materials. Commonly employed in the development of organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and conjugated polymers due to the fluorene backbone’s excellent charge transport and thermal stability. The boronic acid group allows for efficient coupling with aryl halides, making it valuable in creating complex aromatic structures for advanced materials. Also utilized in the synthesis of fluorescent sensors and dyes where the fluorene unit enhances photoluminescent properties.