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Development of polymer-dopant interactions during electropolymerization, a key factor in determining the redox behaviour of conducting polymers
University of Szeged, Hungary.ORCID iD: 0000-0003-3237-9222
2015 (English)In: Journal of Solid State Electrochemistry, ISSN 1432-8488, E-ISSN 1433-0768, Vol. 19, no 9, p. 2891-2896Article in journal (Refereed) Published
Abstract [en]

Investigation of ionic motion in connection with the redox transformation of conjugated polymers (CP) has always been at the leading edge of research. Motivated by recent proofs for the chemical bond formation between chloride ion and alpha-positioned carbon in poly (3,4-ethylenedioxythiophene) (PEDOT), comprehensive studies have been extended to another strongly electronegative halide (F-) and to another CP, polypyrrole (PPy). As the electrochemical quartz crystal nanobalance (EQCN) results proved, the movement of the bulky Bu4N+ cations has been exclusively experienced during the redox processes of both systems. Moreover, the decisive role of the anions being present in the polymerization solution in determining the redox capacity and, consequently, the maximum doping level of the films was evidenced. On the grounds of the systematic experiments, the strong and permanent chemical interaction of highly electronegative anions and the polymer has been demonstrated as a general phenomenon. Importantly, this observation requires the necessary reconsideration of specific polymer-dopant interactions and calls attention to the necessity of careful design of the polymerization procedure.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2015. Vol. 19, no 9, p. 2891-2896
Keywords [en]
PEDOT, Polypyrrole, EQCN, Electronegative anions, Polymer-dopant interactions
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-218753DOI: 10.1007/s10008-015-2791-1ISI: 000360711600040Scopus ID: 2-s2.0-84940893415OAI: oai:DiVA.org:kth-218753DiVA, id: diva2:1161479
Note

QC 20171130

Available from: 2017-11-30 Created: 2017-11-30 Last updated: 2017-11-30Bibliographically approved

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