Toward Purple-to-Green-to-Transmissive-to-Black Color Switching in Polymeric Electrochrome

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Karabiyik E., Sefer E., Baycan Koyuncu F. , Tonga M., Ozdemir E. , Koyuncu S.

MACROMOLECULES, vol.47, pp.8578-8584, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47
  • Publication Date: 2014
  • Doi Number: 10.1021/ma501975m
  • Title of Journal : MACROMOLECULES
  • Page Numbers: pp.8578-8584

Abstract

A novel 3,4-ethylenedioxythiophene (EDOT)-based donoracceptor electroactive monomer (HCQE) bearing carbazole subunit is synthesized, and then the corresponding polymer, poly(HCQE), is directly deposited onto ITO/glass surface via electrochemical process. Spectroelectrochemical studies demonstrate that poly(HCQE) is capable of showing both n- and p-doping processes. Hence, this low band polymer serves the multielectrochromic feature at three separate states (-0.4 to -2.0 V, -0.4 to 1.2 V, and 1.2 to 2.0 V) with a highly unique near colorless and colored states, fast switching times, redox switching stability, and exceptional transmittance change. To the best of our knowledge, this is the first report of a neutral state green multielectrochromic polymer exhibiting successive switching of colored-to-bleached-to-colored in three distinct regimes.