Used as a key intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its bromo and amine functional groups allow for further cross-coupling reactions, making it valuable in constructing conjugated molecules for OLEDs and organic light-emitting transistors. Also employed in the development of fluorescent dyes and sensors due to its rigid, planar fluorene backbone which enhances photostability and quantum yield. Additionally, it serves as a building block in pharmaceutical research for designing bioactive compounds with potential neurological activity.