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Keywords:

  • CO2/CH4 selectivity;
  • encapsulation;
  • metal salts;
  • metal–organic frameworks;
  • porphyrinoids
Thumbnail image of graphical abstract

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.