Used as a key building block in the synthesis of covalent organic frameworks (COFs), enabling the construction of porous, conjugated materials for gas storage, catalysis, and sensing applications. Its planar geometry and multiple aldehyde groups allow for directional linkage with amine-functionalized linkers via Schiff base reactions, promoting the formation of stable, extended networks. The presence of a pyrene core provides strong π-conjugation and facilitates π-π stacking, making the derived frameworks suitable for optoelectronic applications and fluorescence-based detection systems. Also employed in the development of organic electronics and photovoltaic devices due to its light-harvesting properties.