1,3,6,8-Tetrakis(4-carboxyphenyl)pyrene (TBAPy) is an organic molecule featuring a central pyrene core symmetrically functionalized with four benzoic acid groups. This extended π-conjugated structure and the presence of multiple carboxylate moieties make it a highly versatile building block in materials science. TBAPy is a prominent ligand for constructing metal-organic frameworks (MOFs) and covalent organic frameworks (COFs). Its rigid, planar geometry and four carboxylate coordination sites enable the formation of highly porous, crystalline, and stable network structures. These frameworks, such as the well-known NU-1000, exhibit exceptional surface areas and tunable pore environments, making them valuable for applications in gas storage (e.g., hydrogen, methane), carbon dioxide capture, heterogeneous catalysis, and chemical sensing. Beyond its primary use in porous materials, TBAPy's strong fluorescence and electron-rich nature also make it a candidate for developing organic semiconductors and luminescent materials. Its properties are central to research in advanced functional materials for energy and environmental technologies.