title: 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.
authors.affiliation: School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, U.K.
authors.forename: Simona
authors.initials: S
authors.lastname: Pili
authors.affiliation: School of Chemistry, University of Nottingham , University Park, Nottingham NG7 2RD, U.K.
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Argent
authors.affiliation: School of Chemistry, University of Nottingham , University Park, Nottingham NG7 2RD, U.K.|Diamond Light Source , Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K.
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Morris
authors.affiliation: School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, U.K.
authors.forename: Peter
authors.initials: P
authors.lastname: Rought
authors.affiliation: ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory , Chilton, Oxfordshire OX11 0QX, U.K.
authors.forename: Victoria
authors.initials: V
authors.lastname: García-Sakai
authors.affiliation: ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory , Chilton, Oxfordshire OX11 0QX, U.K.
authors.forename: Ian P
authors.initials: IP
authors.lastname: Silverwood
authors.affiliation: School of Chemistry, Cardiff University , Cardiff CF10 3XQ, U.K.
authors.forename: Timothy L
authors.initials: TL
authors.lastname: Easun
authors.affiliation: Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham , University Park, Nottingham NG7 2RD, U.K.
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.affiliation: Diamond Light Source , Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K.
authors.forename: Mark R
authors.initials: MR
authors.lastname: Warren
authors.affiliation: Diamond Light Source , Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K.
authors.forename: Claire A
authors.initials: CA
authors.lastname: Murray
authors.affiliation: Diamond Light Source , Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K.
authors.forename: Chiu C
authors.initials: CC
authors.lastname: Tang
authors.affiliation: School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, U.K.
authors.forename: Sihai
authors.initials: S
authors.lastname: Yang
authors.affiliation: School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, U.K.
authors.forename: Martin
authors.initials: M
authors.lastname: Schröder
mesh_terms: D008670:Metals / Q000737:chemistry*; D008958:Models, Molecular; D009502:Neutrons; D009930:Organic Chemicals / Q000737:chemistry*; D063065:Organophosphonates / Q000737:chemistry*; D011522:Protons; D012542:Scattering, Radiation; D013818:Thermogravimetry
chemical_list: D008670:Metals; D009930:Organic Chemicals; D063065:Organophosphonates; D011522:Protons