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Mechanistic Investigation of Charge Transport in a Conducting Redox Polymer
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och Funktionella Material)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och Funktionella Material)
(Department of Chemistry – Ångström)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
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(English)Manuscript (preprint) (Other academic)
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 EPR 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 two plausible charge transport mechanisms are suggested for the electronic conduction in poly-3-((2,5-hydroquinone)vinyl)-1H-pyrrole.

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Nano Technology
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URN: urn:nbn:se:uu:diva-316489OAI: oai:DiVA.org:uu-316489DiVA: diva2:1077951
Available from: 2017-03-01 Created: 2017-03-01 Last updated: 2017-03-13
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Hao, HuangKarlsson, ChristofferStrømme, MariaGogoll, AdolfSjödin, Martin
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Nanotechnology and Functional MaterialsDepartment of Chemistry - BMC
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