| Effect of perfluoroalkyl chain length on proton conduction in fluoroalkylated phosphonic, phosphinic, and sulfonic acids. | |
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MedLine Citation:
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PMID: 21028860 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The effects of increasing perfluoroalkyl chain length on the molecular properties of viscosity, diffusivity, and ionic conductivity of a series of acid model compounds analogous to comb-branch perfluorinated ionomers functionalized with phosphonic, phosphinic, and sulfonic protogenic groups are reported. Anhydrous proton transport by a Grotthuss-like hopping mechanism was observed to occur efficiently in phosphorus-based fluoroalkylated model acids but only when there is a relatively low perfluoroalkyl content. The decrease in degree of dissociation of the protogenic groups follows the order phosphonic > phosphinic > sulfonic, and the degree of dissociation and the magnitude of ion-ion correlations are approximately independent of chain length. |
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Authors:
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Mahesha B Herath; Stephen E Creager; Alex Kitaygorodskiy; Darryl D DesMarteau |
Publication Detail:
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Type: Journal Article Date: 2010-10-28 |
Journal Detail:
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Title: The journal of physical chemistry. B Volume: 114 ISSN: 1520-5207 ISO Abbreviation: J Phys Chem B Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101157530 Medline TA: J Phys Chem B Country: United States |
Other Details:
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Languages: eng Pagination: 14972-6 Citation Subset: - |
Affiliation:
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Department of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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