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

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. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.