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

ABSTRACT: 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.

SUBMITTER: Pili S 

PROVIDER: S-EPMC4882730 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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

Pili Simona S   Argent Stephen P SP   Morris Christopher G CG   Rought Peter P   García-Sakai Victoria V   Silverwood Ian P IP   Easun Timothy L TL   Li Ming M   Warren Mark R MR   Murray Claire A CA   Tang Chiu C CC   Yang Sihai S   Schröder Martin M  

Journal of the American Chemical Society 20160516 20

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  ...[more]

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