4.8 Article

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

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 20, Pages 6352-6355

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b02194

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Funding

  1. University of Manchester
  2. University of Nottingham
  3. EPSRC
  4. ERC
  5. EPSRC [EP/I011870/1, EP/I020942/1, EP/I011870/2, EP/P001386/1] Funding Source: UKRI
  6. Engineering and Physical Sciences Research Council [EP/C528964/1, EP/I011870/1, EP/I011870/2, EP/P001386/1, EP/I020942/1] Funding Source: researchfish

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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 x 10(-4) S/cm at 98% relative humidity and 25 degrees 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.

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