A novel donor-acceptor polymeric electrochromic material containing carbazole and 1,8-naphtalimide as subunit

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Baycan Koyuncu F., Koyuncu S., Özdemir E.

ELECTROCHIMICA ACTA, vol.55, pp.4935-4941, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 55
  • Publication Date: 2010
  • Doi Number: 10.1016/j.electacta.2010.03.094
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4935-4941
  • Keywords: Carbazole, 1,8-Napthalimide, Donor-acceptor polymer, Electrochromic polymer, 1,8-NAPHTHALIMIDE, GREEN, METHYLMETHACRYLATE, COPOLYMERS, SOLVENT
  • Çanakkale Onsekiz Mart University Affiliated: Yes


We report here the synthesis of a novel polymeric electrochromic material containing carbazole (Cbz)-donor and 1,8-napthalimide-acceptor as subunit. The band gap E-g was measured using UV-vis spectroscopy and compared with that obtained by cyclic voltammetry (CV). Due to intramolecular electron transfer from Cbz-donor to 1,8-napthalimide-acceptor, the fluorescence quenching was observed. When the spectro-electrochemical and electrochromic properties of polymer film were investigated, various tones of green color were obtained on the polymeric film. In the positive regime, the polymer film obtained thereby is dark green resulting from the association of carbazolylium cation radicals at oxidized state and then it can be bleached by electrochemical reduction. Besides, in the negative regime, yellowish green color of film converted to blue attributed to reduction of the 1,8-napthalimide moiety. Finally, the polymeric electrochromic exhibits multi-electrochromic behavior, high redox stability, high coloration efficiency and reasonable response time. (C) 2010 Elsevier Ltd. All rights reserved.