Used as a key building block in the synthesis of covalent organic frameworks (COFs), particularly for constructing porous, crystalline materials with high surface areas. Its three aldehyde groups enable robust Schiff-base reactions with multitopic amine monomers, facilitating the formation of stable imine-linked networks. These COFs are explored for applications in gas storage, catalysis, and optoelectronic devices due to their tunable pore size and functional versatility. Also employed in the development of fluorescent sensors and organic semiconductors, leveraging its extended π-conjugation and structural rigidity.