

FOLLOWUS
Department of Electrical and Electronics Engineering, Baskent University, TR-06810 Ankara, Turkey
egulcansu@baskent.edu.tr
Received:22 June 2018,
Revised:2018-8-10,
Accepted:13 August 2018,
Online First:05 September 2018,
Published:2019-01
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Citation: Cansu-Ergun, E. G. Covering the more visible region by electrochemical copolymerization of carbazole and benzothiadiazole based donor-acceptor type monomers. Chinese J. Polym. Sci. 2019, 37, 28–35
Emine Gul Cansu-Ergun. Covering the More Visible Region by Electrochemical Copolymerization of Carbazole and Benzothiadiazole Based Donor-Acceptor Type Monomers[J]. Chinese Journal of Polymer Science, 2019, 37(1): 28-35.
Citation: Cansu-Ergun, E. G. Covering the more visible region by electrochemical copolymerization of carbazole and benzothiadiazole based donor-acceptor type monomers. Chinese J. Polym. Sci. 2019, 37, 28–35 DOI: 10.1007/s10118-019-2181-8.
Emine Gul Cansu-Ergun. Covering the More Visible Region by Electrochemical Copolymerization of Carbazole and Benzothiadiazole Based Donor-Acceptor Type Monomers[J]. Chinese Journal of Polymer Science, 2019, 37(1): 28-35. DOI: 10.1007/s10118-019-2181-8.
An electrochromic copolymer film of 2-(3
3-dihexyl-3
4-dihydro-2
H
-thieno[3
4-
b
][1
4]
dioxepin-6-yl)-7-(3
3-dihexyl-3
4-dihydro-2
H
-thieno[3
4-
b
][1
4]
dioxepin-8-yl)-9
H
-carbazole (
M1
) and 4
7-bis(thiophen-2-yl)benzo[
c
][1
2
5]
thiadiazole (
M2
) was prepared
via
electrochemical technique. The copolymerization was performed with one to one monomer feed ratio. Electrochemical and optical properties of the resulting copolymer film (
P3
) and the homopolymer films of
M1
and
M2
(
P1
and
P2
) were investigated by using cyclic voltammetry and UV-Vis spectrometry techniques
and the corresponding results were compared. Incorporation of
M1
and
M2
into copolymer matrix was clearly observed on the resulting cyclic voltammograms and UV-Vis spectra.
P3
covered the visible regions coming from both
P1
and
P2
and exhibited a neutral state darker color than those of homopolymers.
P3
film was found to have a multichromic behavior
appearing as brown in its neutral state while changing its color upon oxidation to dark-gray (at about 0.3 V)
to blue (at about 0.6 V) and finally to grayish cyan (beyond 0.9 V)
with a corresponding optical band gap of 1.65 eV.
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