Development of polymer–dopant interactions during electropolymerization, a key factor in determining the redox behaviour of conducting polymers

Péter S. Tóth, Balázs Endrődi, Csaba Janáky, Csaba Visy

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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 α-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.

Original languageEnglish
Pages (from-to)2891-2896
Number of pages6
JournalJournal of Solid State Electrochemistry
Volume19
Issue number9
DOIs
Publication statusPublished - Sep 5 2015

Keywords

  • EQCN
  • Electronegative anions
  • PEDOT
  • Polymer–dopant interactions
  • Polypyrrole

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Development of polymer–dopant interactions during electropolymerization, a key factor in determining the redox behaviour of conducting polymers'. Together they form a unique fingerprint.

  • Cite this