Electrochemical grafting of poly(3,4-ethylenedioxythiophene) into a titanium dioxide nanotube host network

Csaba JanÁky, Gábor Bencsik, Árpád RÁcz, Csaba Visy, Norma R. De Tacconi, Wilaiwan Chanmanee, Krishnan Rajeshwar

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29 Citations (Scopus)

Abstract

This study focuses on electrodeposition for infiltrating in situ a conducting polymer such as poly(3,4-ethylenedioxythiophene) (PEDOT) into a host titanium dioxide (TiO2) nanotube array (NTA) framework. The TiO 2 NTA was electrosynthesized on titanium foil in turn by anodization in a fluoride-containing medium. The PEDOT layer was electrografted into the TiO2 NTA framework using a two-step potentiostatic growth protocol in acetonitrile containing supporting electrolyte. The nanoscopic features of oligomer/polymer infiltration and deposition in the NTA interstitial voids were monitored by field-emission scanning electron microscopy. Systematic changes in the nanotube inner diameter and the wall thickness afforded insights into the evolution of the TiO2NTA/PEDOT hybrid assembly. This assembly was subsequently characterized by UV-visible diffuse reflectance, cyclic voltammetry, and photoelectrochemical measurements. These data serve as a prelude to further use of these hybrids in heterojunction solar cells.

Original languageEnglish
Pages (from-to)13697-13702
Number of pages6
JournalLangmuir
Volume26
Issue number16
DOIs
Publication statusPublished - Aug 17 2010

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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    JanÁky, C., Bencsik, G., RÁcz, Á., Visy, C., De Tacconi, N. R., Chanmanee, W., & Rajeshwar, K. (2010). Electrochemical grafting of poly(3,4-ethylenedioxythiophene) into a titanium dioxide nanotube host network. Langmuir, 26(16), 13697-13702. https://doi.org/10.1021/la101300n