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

Varis, Serhat; Ak, Metin; Akhmedov, Iris; Tanyeli, CİHANGİR; Toppare, LEVENT

doi:10.1016/j.jelechem.2007.02.002

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 (SCI-Expanded, Scopus)

Publication Type: Article / Article
Volume: 603 Issue: 1
Publication Date: 2007
Doi Number: 10.1016/j.jelechem.2007.02.002
Journal Name: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.8-14
Middle East Technical University Affiliated: Yes

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%).