3 years ago

Single Crystal Proton Conduction Study of a Metal Organic Framework of Modest Water Stability

Single Crystal Proton Conduction Study of a Metal Organic Framework of Modest Water Stability
George K. H. Shimizu, Biplab Joarder, Jian-Bin Lin, Zaida Romero
A sulfonated indium (In) metal organic framework (MOF) is reported with an anionic layered structure incorporating hydrogen-bonded dimethylammonium cations and water molecules. The MOF becomes amorphous in >60% relative humidity; however, impedance analysis of pelletized powders revealed a proton conduction value of over 10–3 S cm–1 at 25 °C and 40% RH, a very high proton conduction value for low humidity and moderate temperature. Given the modest humidity stability of the MOF, triaxial impedance analyses on a single crystal was performed and confirmed bulk proton conductivity over 10–3 S cm–1 along two axes corroborating the data from the pellet.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b03397

DOI: 10.1021/jacs.7b03397

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