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Enhanced proton conductivity in a flexible metal-organic framework promoted by single-crystal-to-single-crystal transformation

DOI: 10.1039/D0CC05270A DOI Help

Authors: Xi Chen (University of Manchester) , Zhongyue Zhang (Nagoya University) , Jin Chen (University of Manchester) , Sergei Sapchenko (University of Manchester) , Xue Han (University of Manchester) , Ivan Da Silva (ISIS Pulsed Neutron and Muon Source) , Ming Li (University of Nottingham) , Inigo Vitorica-Yrezabal (University of Manchester) , George Whitehead (University of Manchester) , Chiu C. Tang (Diamond Light Source) , Kunio Awaga (Nagoya University) , Sihai Yang (University of Manchester) , Martin Schroeder (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemical Communications

State: Published (Approved)
Published: November 2020
Diamond Proposal Number(s): 22138

Abstract: MFM-722(Pb)-DMA undergoes a single-crystal-to-single-crystal (SCSC) transformation to give MFM-722(Pb)-H2O via ligand substitution upon exposure to water vapour. In situ single crystal impedance spectroscopy reveals an increase in proton conductivity due to this structural transition, with MFM-722(Pb)-H2O showing a proton conductivity of 6.61×10-4 S cm-1 at 50 °C and 98% RH. The low activation energy (Ea = 0.21 eV) indicates that the proton conduction follows a Grotthuss mechanism.

Subject Areas: Chemistry, Materials


Instruments: I11-High Resolution Powder Diffraction

Discipline Tags:

Material Sciences Metallurgy Metal-Organic Frameworks Chemistry Organometallic Chemistry

Technical Tags: