Vapor-phase polymerization of 3,4-ethylenedioxythiophene: A route to highly conducting polymer surface layers

Bjorn Winther Jensen, Keld West

Research output: Contribution to journalArticle

304 Citations (Scopus)

Abstract

A new synthetic route to poly-3,4-ethylenedioxythiophene (PEDT) with a conductivity exceeding 1000 S/cm is described. The method is based on base-inhibited vapor-phase polymerization, where a surface covered with ferric p-toluenesulfonate as oxidant mixed with a volatile base (pyridine) is exposed to 3,4-ethylenedioxythiophene (EDT) vapors. The base is added to suppress an acid-initiated polymerization of EDT, leading to a product with little or no conjugation. The product of the base-inhibited vapor-phase polymerization is confirmed to be virtually identical to PEDT obtained by wet chemical oxidation by both spectroscopic and electrochemical methods. A possible reaction scheme for the acidinitiated polymerization is discussed.

Original languageEnglish
Pages (from-to)4538-4543
Number of pages6
JournalMacromolecules
Volume37
Issue number12
DOIs
Publication statusPublished - 2004 Jun 15
Externally publishedYes

Fingerprint

Conducting polymers
Vapors
Polymerization
Oxidants
Pyridine
Oxidation
Acids
3,4-ethylenedioxythiophene
poly(3,4-ethylene dioxythiophene)

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Vapor-phase polymerization of 3,4-ethylenedioxythiophene : A route to highly conducting polymer surface layers. / Winther Jensen, Bjorn; West, Keld.

In: Macromolecules, Vol. 37, No. 12, 15.06.2004, p. 4538-4543.

Research output: Contribution to journalArticle

Winther Jensen, Bjorn ; West, Keld. / Vapor-phase polymerization of 3,4-ethylenedioxythiophene : A route to highly conducting polymer surface layers. In: Macromolecules. 2004 ; Vol. 37, No. 12. pp. 4538-4543.
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