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Effect of the Linker in Terephthalate-Functionalized Conducting Redox Polymers
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechnology and Functional Materials)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och funktionella material)
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2016 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859Article in journal (Refereed) Published
Abstract [en]

Abstract The combination of high capacity redox active pendent groups and conducting polymers, realized in conducting redox polymers (CRPs), provides materials with high charge storage capacity that are electronically conducting which makes CRPs attractive for electrical energy storage applications. In this report, six polythiophene and poly(3,4-ethylenedioxythiophene)(PEDOT)-based CRPs with a diethyl terephthalate unit covalently bound to the polymer chain by various linkers have been synthesized and characterized electrochemically. The effects of the choice of polymer backbone and of the nature of the link on the electrochemistry, and in particular the cycling stability of these polymers, are discussed. All CRPs show both the doping of the polymer backbone as well as the redox behavior of the pendent groups and the redox potential of the pendent groups in the CRPs is close to that of corresponding monomer, indicating insignificant interaction between the pendant and the polymer backbone. While all CRPs show various degrees of charge decay upon electrochemical redox conversion, the PEDOT-based CRPs show significantly improved stability compared to the polythiophene counterparts. Moreover, we show that by the right choice of link the cycling stability of diethyl terephthalate substituted PEDOT-based CRPs can be significantly improved.

Place, publisher, year, edition, pages
2016.
Keyword [en]
conducting redox polymers, PEDOT, polythiophene, terephthalate
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-310464DOI: 10.1016/j.electacta.2016.10.183OAI: oai:DiVA.org:uu-310464DiVA: diva2:1057033
Available from: 2016-12-16 Created: 2016-12-16 Last updated: 2016-12-19

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S0013468616322800

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Yang, LiGogoll, AdolfStrömme, MariaSjödin, Martin
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