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Electron Hopping between Fe 3d States in Ethynylferrocene-doped Poly(Methyl Methacrylate)-poly(Decyl Methacrylate) Copolymer Membranes
Univ Geneva, Dept Inorgan & Analyt Chem, Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland..
ANSTO, Australian Synchrotron, 800 Blackburn Rd, Clayton, Vic 3168, Australia..
Univ Geneva, Dept Inorgan & Analyt Chem, Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland..
Univ Geneva, Dept Inorgan & Analyt Chem, Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland..
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2018 (English)In: Electroanalysis, ISSN 1040-0397, E-ISSN 1521-4109, Vol. 30, no 4, p. 596-601Article in journal (Refereed) Published
Abstract [en]

Synchrotron radiation-valence band spectroscopy (SR-VBS) has been utilized in a study of redox molecule valence states implicated in the electron hopping mechanism of ethynylferrocene in unplasticized poly(methyl methacrylate)-poly(decyl methacrylate) [PMMA-PDMA] membranes. In this communication, it is revealed that, at high concentrations of ethynylferrocene, there are observable Fe 3d valence states that are likely linked to electron hopping between ferrocene moieties of neighbouring redox molecules. Furthermore, electrochemically induced stratification of ethynylferrocene in an oxidized PMMA-PDMA membrane produces a gradient of Fe 3d states toward the buried interface at the glassy carbon/PMMA-PDMA membrane enabling electron hopping and electrochemical reactivity of dissolved ethynylferrocene across this buried film.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2018. Vol. 30, no 4, p. 596-601
Keywords [en]
Synchrotron radiation valence band spectroscopy, Electron hopping, Ethynylferrocene, Copolymer membrane
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-226776DOI: 10.1002/elan.201700510ISI: 000429708900002Scopus ID: 2-s2.0-85031116476OAI: oai:DiVA.org:kth-226776DiVA, id: diva2:1203669
Conference
Matrafured International Conference on Electrochemical Sensors, JUN 11-16, 2017, Visegrad, Hungary
Funder
EU, FP7, Seventh Framework Programme, FP7-GA 614002-SCHeMA
Note

QC 20180504

Available from: 2018-05-04 Created: 2018-05-04 Last updated: 2018-05-04Bibliographically approved

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