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

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• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：May 25, 2016
• 年：2016
• 卷：138
• 期：20
• 全文大小：303K
• 年卷期：0
• ISSN：1520-5126

文摘

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.