Electrochemical and optical properties of an azo dye based conducting copolymer

Authors

ATİLLA CİHANER
FATİH ALGI

Abstract

The electrochemical and optical properties of a novel conducting copolymer called poly(2,5'-dimethyl-[4-(2,5-di-thiophen- 2-yl-pyrrol-1-yl)-phenyl]azobenzene-co-(3,4-ethylenedioxythiophene)) (poly(1-co-EDOT)) are reported. Electrochemically synthesized poly(1-co-EDOT) based on the azo dye has a well-defined and reversible redox couple (0.37 V vs. Ag/AgCl) with good cycle stability. The copolymer film exhibits high conductivity (13 S/cm) as well as electrochromic behavior (magenta when neutralized and transmissive sky blue when oxidized). Furthermore, electro-optically active copolymer film has a low band gap of 1.79 eV with a \pi-\pi* transition at 555 nm.

DOI

10.3906/kim-0902-21

Keywords

Conducting polymers, copolymers, dithienylpyrrole, azobenzene, EDOT.

First Page

759

Last Page

767

Recommended Citation

CİHANER, ATİLLA and ALGI, FATİH (2009) "Electrochemical and optical properties of an azo dye based conducting copolymer," Turkish Journal of Chemistry: Vol. 33: No. 6, Article 4. https://doi.org/10.3906/kim-0902-21
Available at: https://journals.tubitak.gov.tr/chem/vol33/iss6/4