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

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...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 139; no. 21; pp. 7176 - 7179
Main Authors Joarder, Biplab, Lin, Jian-Bin, Romero, Zaida, Shimizu, George K. H
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 31.05.2017
Subjects
cations
hydrogen bonding
indium
powders
relative humidity
temperature
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Summary: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.
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/jacs.7b03397