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Electrochemical and optical properties of solution processable benzotriazole and benzothiadiazole containing copolymers
Date
2012-02-01
Author
KARAKUS, Melike
BALAN, Abidin
BARAN, Derya
Toppare, Levent Kamil
Çırpan, Ali
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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2-Dodecyl benzotriazole (BTz) and benzothiadiazole (BTd) containing alternating copolymers poly(4-(2-dodecyl-2H-benzo[d][1,2,3]triazol-4-yl)benzo[c][1,2,5]thiadiazole (P1), poly(4-(5-(2-dodecyl-7-(thiophen-2yl)-2H-benzo[d][1,2,3]triazol-4-yl)thiophen-2-yl)benzo[c] [1,2,5] thiadiazole (P2) and poly(4-(5-(2-dodecyl-7-(4-hexylthiophen-2-yl)-2H-benzo[d] [1,2,3]triazol-4-yl) -3-hexylthiophen-2-yl) benzo[c][1,2,5] thiadiazole (P3) were synthesized via Suzuki polycondensation reactions. The solubility of the polymers enabled spray coating to carry out the electrochemical and optical studies. Electronic and optical properties of resulting polymers showed that P2 is a great candidate to be used as processable blue electrochromic polymer which can switch to transparent upon oxidation. P3 was also investigated in terms of its electrochromic performance which has two different colored and a transparent states, whereas P1 does not exhibit any spectral change upon applied potentials. HOMO and LUMO values, band gaps and kinetic behavior of polymers upon externally applied potential are reported in detail.
Subject Keywords
Benzotriazole
,
Benzothiadiazole
,
Donor acceptor copolymers
,
Electrochromism
,
Organic electronics
URI
https://hdl.handle.net/11511/35709
Journal
SYNTHETIC METALS
DOI
https://doi.org/10.1016/j.synthmet.2011.11.014
Collections
Department of Chemistry, Article