A novel multielectrochromic copolymer based on 1-(4-nitrophenyl)-2,5-di(2-thienyl)-1H-pyrrole and EDOT


Varis S., Ak M., Akhmedov I. M. , Tanyeli C. , Toppare L.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, vol.603, no.1, pp.8-14, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 603 Issue: 1
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jelechem.2007.02.002
  • Title of Journal : JOURNAL OF ELECTROANALYTICAL CHEMISTRY
  • Page Numbers: pp.8-14

Abstract

Copolymer of 1-(4-nitrophenyl)-2,5-di(2-thienyl)-1H-pyrrole (NTP) with 3,4-ethylene dioxythiophene (EDOT) was electrochemically synthesized and characterized. Resulting copolymer film has distinct electrochromic properties. It has five different colors (light red, red, light grey, green, and blue). At the neutral state lambda(max) x value due to the pi-pi* transition was found to be 550 nm and E-g was calculated as 1.6 eV. Double potential step chronoamperometry experiment shows that copolymer film has good stability, fast switching time (1.2 s) and high optical contrast (42%).