Used as a highly selective organic ligand in metal-organic frameworks (MOFs) for gas adsorption and separation, particularly effective in capturing carbon dioxide due to its rigid, multi-dentate structure. Its extended aromatic framework enhances π-π interactions with gas molecules and provides thermal stability. Also employed in supramolecular chemistry to construct porous coordination polymers with tunable pore sizes. Shows promise in catalysis support due to its ability to chelate metal ions in well-defined geometries, improving catalyst stability and reusability.