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Polaron Disproportionation Charge Transport in a Conducting Redox Polymer
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.ORCID iD: 0000-0002-6218-3039
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.ORCID iD: 0000-0002-5496-9664
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2017 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 121, no 24, p. 13078-13083Article in journal (Refereed) Published
Abstract [en]

Herein we report a mechanistic study of the charge transport in poly-3-((2,5-hydroquinone)vinyl)-1H-pyrrole by conductance measurements at various temperatures performed in situ during doping of the polypyrrole backbone in contact with an aqueous electrolyte. Charge transport was found to occur by electron hopping with associated electron transfer activation energies in the range of 0.08-0.2 eV. In situ electron paramagnetic resonance experiments indicated polarons as the dominant charge carriers and the charge transport was found to follow a second-order dependence with respect to the number of accumulated charges. Based on the findings, we present a polaron comproportionation/disproportionation model for electron conduction in poly-3-((2,5-hydroquinone)vinyl)-1H-pyrrole, thus, providing a complement to existing models for charge propagation in conducting polymers.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2017. Vol. 121, no 24, p. 13078-13083
National Category
Physical Chemistry Engineering and Technology Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-329648DOI: 10.1021/acs.jpcc.7b03671ISI: 000404201900013OAI: oai:DiVA.org:uu-329648DiVA, id: diva2:1144545
Funder
Swedish Foundation for Strategic Research Swedish Research CouncilStiftelsen Olle Engkvist ByggmästareSwedish Energy AgencyAvailable from: 2017-09-26 Created: 2017-09-26 Last updated: 2017-11-25

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Huang, HaoMamedov, FikretStrömme, MariaGogoll, ASjödin, Martin

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Huang, HaoKarlsson, ChristofferMamedov, FikretStrömme, MariaGogoll, ASjödin, Martin
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