Enhancing Proton Conduction in a Metal–Organic Framework by Isomorphous Ligand Replacement

Using the concept of isomorphous replacement applied to entire ligands, a C 3-symmetric trisulfonate ligand was substituted with a C 3-symmetric tris(hydrogen phosphonate) ligand in a proton conducting metal–organic framework (MOF). The resulting material, PCMOF21/2, has its proton conduction raised...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2013-01, Vol.135 (3), p.963-966
Main Authors: Kim, SiRim, Dawson, Karl W, Gelfand, Benjamin S, Taylor, Jared M, Shimizu, George K. H
Format: Article
Language:English
Subjects:
Ligands
Models, Molecular
Organometallic Compounds - chemistry
Protons
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Summary:Using the concept of isomorphous replacement applied to entire ligands, a C 3-symmetric trisulfonate ligand was substituted with a C 3-symmetric tris(hydrogen phosphonate) ligand in a proton conducting metal–organic framework (MOF). The resulting material, PCMOF21/2, has its proton conduction raised 1.5 orders of magnitude compared to the parent material, to 2.1 × 10–2 S cm–1 at 90% relative humidity and 85 °C, while maintaining the parent MOF structure.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja310675x