Used primarily in the synthesis of conjugated polymers for organic electronics, such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). Its structure allows for functionalization that enhances charge transport and light emission properties. Also employed as a monomer in palladium-catalyzed coupling reactions to build fluorene-based copolymers with tunable electronic characteristics. Additionally, finds use in the development of fluorescent sensors and optoelectronic materials due to its rigid, planar backbone and good thermal stability.