Ultrathin conjugated polymer network films of carbazole functionalized poly(p-Phenylenes) via electropolymerization

Renu Ravindranath, Parayil Kumaran Ajikumar, Sheeja Bahulayan, Nurmawati Bte Muhammad Hanafiah, Akira Baba, Rigoberto C. Advincula, Wolfgang Knoll, Suresh Valiyaveettil

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Ultrathin films of a cross-linked and chemically distinct conjugated poly(p-phenylene) network via electropolymerization are described. The amphiphilic network precursor was synthesized by incorporating the alkoxy carbazole group (-O(CH2)5Cb) to a poly(p-phenylene) (C6PPPOH) backbone. In order to investigate the combined thin film electrochemical and photophysical properties of poly(p-phenylene)s and polycarbazole conjugated polymers, C6PPPC5Cb was deposited on substrates using the Langmuir Blodgett Kuhn (LBK) method. The monolayer isotherm of the polymer, C6PPPC5Cb, showed a liquid expanded region slightly different from the parent polymer C6PPPOH. Multilayers (up to 30 layers) were transferred to different substrates such as quartz, gold coated LaSFN9 and ITO substrates for analysis. For conversion to a conjugated polymer network (CPN) film, the electroactive carbazole group was electropolymerized using cyclic voltammetry (CV) resulting in polycarbazole linking units. The differences in the film properties and corresponding changes in the electrochemical behavior indicate the importance of film thickness and electron/ion transport process in cross linked network films. From the electrochemical studies, the scan rate was found to have a considerable effect on electropolymerization with higher oxidation and reduction peak values found for the rigid network polymer compared to the uncrosslinked polymers.

Original languageEnglish
Pages (from-to)6336-6343
Number of pages8
JournalJournal of Physical Chemistry B
Volume111
Issue number23
DOIs
Publication statusPublished - 2007 Jun 14
Externally publishedYes

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Electropolymerization
carbazoles
Conjugated polymers
Polymers
polymers
Substrates
Quartz
Ultrathin films
Gold
Cyclic voltammetry
Isotherms
Film thickness
Monolayers
Multilayers
Ion Transport
Ions
Electron Transport
ITO (semiconductors)
Thin films
Oxidation

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Ravindranath, R., Ajikumar, P. K., Bahulayan, S., Hanafiah, N. B. M., Baba, A., Advincula, R. C., ... Valiyaveettil, S. (2007). Ultrathin conjugated polymer network films of carbazole functionalized poly(p-Phenylenes) via electropolymerization. Journal of Physical Chemistry B, 111(23), 6336-6343. https://doi.org/10.1021/jp070127b

Ultrathin conjugated polymer network films of carbazole functionalized poly(p-Phenylenes) via electropolymerization. / Ravindranath, Renu; Ajikumar, Parayil Kumaran; Bahulayan, Sheeja; Hanafiah, Nurmawati Bte Muhammad; Baba, Akira; Advincula, Rigoberto C.; Knoll, Wolfgang; Valiyaveettil, Suresh.

In: Journal of Physical Chemistry B, Vol. 111, No. 23, 14.06.2007, p. 6336-6343.

Research output: Contribution to journalArticle

Ravindranath, R, Ajikumar, PK, Bahulayan, S, Hanafiah, NBM, Baba, A, Advincula, RC, Knoll, W & Valiyaveettil, S 2007, 'Ultrathin conjugated polymer network films of carbazole functionalized poly(p-Phenylenes) via electropolymerization', Journal of Physical Chemistry B, vol. 111, no. 23, pp. 6336-6343. https://doi.org/10.1021/jp070127b
Ravindranath, Renu ; Ajikumar, Parayil Kumaran ; Bahulayan, Sheeja ; Hanafiah, Nurmawati Bte Muhammad ; Baba, Akira ; Advincula, Rigoberto C. ; Knoll, Wolfgang ; Valiyaveettil, Suresh. / Ultrathin conjugated polymer network films of carbazole functionalized poly(p-Phenylenes) via electropolymerization. In: Journal of Physical Chemistry B. 2007 ; Vol. 111, No. 23. pp. 6336-6343.
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