Proton Conduction in a Phosphonate-Based Metal-Organic Framework Mediated by Intrinsic "free Diffusion inside a Sphere"

Research output: Contribution to journalArticle

  • External authors:
  • Simona Pili
  • Stephen P. Argent
  • Christopher G. Morris
  • Peter Rought
  • Victoria García-Sakai
  • Ian P. Silverwood
  • Timothy L. Easun
  • Ming Li
  • Mark R. Warren
  • Claire A. Murray
  • Chiu Tang


Understanding the molecular mechanism of proton conduction is crucial for the design of new materials with improved conductivity. Quasi-elastic neutron scattering (QENS) has been used to probe the mechanism of proton diffusion within a new phosphonate-based metal-organic framework (MOF) material, MFM-500(Ni). QENS suggests that the proton conductivity (4.5 × 10-4 S/cm at 98% relative humidity and 25 °C) of MFM-500(Ni) is mediated by intrinsic "free diffusion inside a sphere", representing the first example of such a mechanism observed in MOFs.

Bibliographical metadata

Original languageEnglish
Pages (from-to)6352-6355
Number of pages4
JournalJournal of the American Chemical Society
Issue number20
StatePublished - 25 May 2016