Conjugated polymer network films from precursor polymers: Electrocopolymerization of a binary electroactive monomer composition

Prasad Taranekar, Akira Baba, Timothy M. Fulghum, Rigoberto Advincula

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

We report the synthesis and electropolymerization of a precursor polymer with a binary molecular composition of thiophene and carbazole electroactive groups to form ultrathin films of conjugated polymer networks (CPN) on flat indium tin oxide (ITO) substrates. In the past we have demonstrated the precursor polymer approach based on a single pendant electroactive group. In this work, we describe the interesting electrocopolymerization mechanism and properties of precursor polymers prepared with two different types of pendant electroactive groups (statistical copolymer) and compared behavior to their respective homopolymers. The presence of a smaller amount of carbazole induces the electropolymerization of the higher oxidation potential thiophene units via the reaction of a radical cation and a neutral molecule pathway. These electrochemically generated thin films gave unique optical, electrochemical, and morphological properties as a function of composition. The film properties were investigated by cyclic voltammetry (CV), spectroelectrochemistry, EQCM, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS).

Original languageEnglish
Pages (from-to)3679-3687
Number of pages9
JournalMacromolecules
Volume38
Issue number9
DOIs
Publication statusPublished - 2005 May 3
Externally publishedYes

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Conjugated polymers
Thiophenes
Polymers
Electropolymerization
Monomers
Thiophene
Chemical analysis
Spectroelectrochemistry
Ultrathin films
Homopolymerization
Tin oxides
Indium
Cyclic voltammetry
Cations
Atomic force microscopy
X ray photoelectron spectroscopy
Copolymers
Positive ions
Thin films
Oxidation

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Conjugated polymer network films from precursor polymers : Electrocopolymerization of a binary electroactive monomer composition. / Taranekar, Prasad; Baba, Akira; Fulghum, Timothy M.; Advincula, Rigoberto.

In: Macromolecules, Vol. 38, No. 9, 03.05.2005, p. 3679-3687.

Research output: Contribution to journalArticle

Taranekar, Prasad ; Baba, Akira ; Fulghum, Timothy M. ; Advincula, Rigoberto. / Conjugated polymer network films from precursor polymers : Electrocopolymerization of a binary electroactive monomer composition. In: Macromolecules. 2005 ; Vol. 38, No. 9. pp. 3679-3687.
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