Used as a key building block in the synthesis of covalent organic frameworks (COFs), particularly for constructing porous, crystalline materials with high thermal and chemical stability. Its aldehyde functional groups react with amine-containing linkers via Schiff base condensation, enabling the formation of extended 2D or 3D network structures. These COFs are explored for applications in gas storage, catalysis, and optoelectronic devices due to their ordered channels and tunable electronic properties. Also employed in the development of fluorescent sensors, where the fluorine atoms enhance electron-withdrawing effects and influence photophysical behavior. Additionally, serves as a monomer in specialty polymers for advanced materials research, especially where rigidity and polarity are required.