Direct observation of supramolecular binding of light hydrocarbons in vanadium(iii) and (iv) metal-organic framework materials.

ABSTRACT: Fine tuning of host-guest supramolecular interactions in porous systems enables direct control over the properties of functional materials. We report here a modification of hydrogen bonding and its effect on guest binding in a pair of redox-active metal-organic frameworks (MOFs). Oxidation of MFM-300(V^III) {[VIII2(OH)₂(L)], LH₄ = biphenyl-3,3',5,5'-tetracarboxylic acid} is accompanied by deprotonation of the bridging hydroxyl groups to afford isostructural MFM-300(V^IV), [VIV2O₂(L)]. The precise role of the hydroxyl groups, O-carboxylate centres and π-π interactions in the supramolecular binding of C₂ hydrocarbons in these materials has been determined using neutron diffraction and inelastic neutron scattering, coupled

SUBMITTER: Lu Z 

PROVIDER: S-EPMC5933292 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature