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Effect of (3-Glycidyloxypropyl)Trimethoxysilane (GOPS) on the Electrical Properties of PEDOT:PSS Films
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
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2017 (English)In: Journal of Polymer Science Part B: Polymer Physics, ISSN 0887-6266, E-ISSN 1099-0488, Vol. 55, no 10, p. 814-820Article in journal (Refereed) Published
Abstract [en]

Poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) (PEDOT:PSS) has been reported as a successful functional material in a broad variety of applications. One of the most important advantages of PEDOT:PSS is its water-solubility, which enables simple and environmental friendly manufacturing processes. Unfortunately, this also implies that pristine PEDOT:PSS films are unsuitable for applications in aqueous environments. To reach stability in polar solvents, (3-glycidyloxypropyl)trimethoxysilane (GOPS) is typically used to cross-link PEDOT:PSS. Although this strategy is widely used, its mechanism and effect on PEDOT:PSS performance have not been articulated yet. Here, we present a broad study that provides a better understanding of the effect of GOPS on the electrical and electronic properties of PEDOT:PSS. We show that the GOPS reacts with the sulfonic acid group of the excess PSS, causing a change in the PEDOT:PSS film morphology, while the oxidation level of PEDOT remains unaffected. This is at the origin of the observed conductivity changes. (c) 2017 Wiley Periodicals, Inc.

Place, publisher, year, edition, pages
WILEY , 2017. Vol. 55, no 10, p. 814-820
Keywords [en]
crosslinking; film morphology; GOPS; oxidation level; PEDOT:PSS
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-136852DOI: 10.1002/polb.24331ISI: 000398533300006OAI: oai:DiVA.org:liu-136852DiVA, id: diva2:1092118
Available from: 2017-04-30 Created: 2017-04-30 Last updated: 2017-05-21

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Håkansson, AnnaHan, ShaoboWang, SuhaoLu, JunBraun, SlawomirFahlman, MatsBerggren, MagnusCrispin, XavierFabiano, Simone
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Journal of Polymer Science Part B: Polymer Physics
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