NAPHTHALENEDIIMIDE-BASED METAL ORGANIC FRAMEWORKS FOR THE CAPTURE OF CARBON DIOXIDE

Abstract

We introduce here a novel ligand, N,N′-bis(4-carboxyphenyl)-1,4,5,8-naphthalenediimide (CNDI), which is a suitable compound for the preparation of new materials for the energy sector. The compound was shown to be an excellent ligand for metal organic frameworks (MOFs). The compound was synthesized in a single step and high yields by using molten imidazole as the solvent. Reaction of CNDI with zinc nitrate or zirconium chloride generated the MOFs CNDI/Zn and CNDI/Zr. The MOFs were characterized by x-ray diffraction, nitrogen adsorption isotherms (BET method) and UVvisible spectroscopy. The presence of micropores was evidenced by BET measurements. The MOFs will be incorporated into polymeric membranes, which will be tested for the separation of CO2 from other gases.