Post-Synthetic Modification of Porphyrin-Encapsulating Metal–Organic Materials by Cooperative Addition of Inorganic Salts to Enhance CO2/CH4 Selectivity


  • This work is supported by King Abdullah University of Science and Technology (FIC/2010/06). The microcrystal diffraction of porph(Cl)@MOM-11(Mn2+) was carried at the Advanced Photon Source on beamline 15ID-B at ChemMatCARS Sector 15 (NSF/CHE-0822838 and DE-AC02-06CH11357).


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Keeping MOM: Reaction of biphenyl-3,4′,5-tricarboxylate and Cd(NO3)2 in the presence of meso-tetra(N-methyl-4-pyridyl)porphine tetratosylate afforded porph@MOM-11, a microporous metal–organic material (MOM) that encapsulates cationic porphyrins and solvent in alternating open channels. Porph@MOM-11 has cation and anion binding sites that facilitate cooperative addition of inorganic salts (such as M+Cl) in a stoichiometric fashion.