Modulating supramolecular binding of carbon dioxide in a redox-active porous metal-organic framework.

ABSTRACT: Hydrogen bonds dominate many chemical and biological processes, and chemical modification enables control and modulation of host-guest systems. Here we report a targeted modification of hydrogen bonding and its effect on guest binding in redox-active materials. MFM-300(V^III) {[V^III₂(OH)₂(L)], LH₄=biphenyl-3,3',5,5'-tetracarboxylic acid} can be oxidized to isostructural MFM-300(V^IV), [V^IV₂O₂(L)], in which deprotonation of the bridging hydroxyl groups occurs. MFM-300(V^III) shows the second highest CO₂ uptake capacity in metal-organic framework materials at 298 K and 1 bar (6.0 mmol g^-1) and involves hydrogen bonding between the OH group of the host and the O-don

SUBMITTER: Lu Z 

PROVIDER: S-EPMC5316804 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature