Used in organic synthesis, particularly in the preparation of conjugated materials for optoelectronic devices. It serves as a building block in the production of fluorescent dyes and polymers due to the rigid fluorene backbone, which enhances photostability and quantum yield. Commonly employed in the development of OLEDs (organic light-emitting diodes) and as an intermediate in synthesizing monomers for functional polymers. Its ketone group allows for further derivatization, such as Wittig reactions or reductions, enabling tailored modifications for specific electronic properties. Also utilized in research settings for creating model compounds in photophysical studies.