Functionality in metal-organic framework minerals: proton conductivity, stability and potential for polymorphism

Rare metal-organic framework (MOF) minerals stepanovite and zhemchuzhnikovite can exhibit properties comparable to known oxalate MOF proton conductors, including high proton conductivity over a range of relative humidities at 25 °C, and retention of the framework structure upon thermal dehydration....

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Bibliographic Details
Published in:Chemical science (Cambridge) 2019-05, Vol.10 (18), p.4923-4929
Main Authors: Huskić, Igor, Novendra, Novendra, Lim, Dae-Woon, Topić, Filip, Titi, Hatem M, Pekov, Igor V, Krivovichev, Sergey V, Navrotsky, Alexandra, Kitagawa, Hiroshi, Friščić, Tomislav
Format: Article
Language:English
Subjects:
Aluminum
Chemistry
Conductivity
Conductors
Coordination compounds
Crystallography
Dehydration
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Metal-organic frameworks
Minerals
Polymorphism
Protons
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Summary:Rare metal-organic framework (MOF) minerals stepanovite and zhemchuzhnikovite can exhibit properties comparable to known oxalate MOF proton conductors, including high proton conductivity over a range of relative humidities at 25 °C, and retention of the framework structure upon thermal dehydration. They also have high thermodynamic stability, with a pronounced stabilizing effect of substituting aluminium for iron, illustrating a simple design to access stable, highly proton-conductive MOFs without using complex organic ligands.
ISSN:2041-6520
2041-6539
DOI:10.1039/c8sc05088k