Journal
ELECTROCHIMICA ACTA
Volume 109, Issue -, Pages 214-220Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.07.102
Keywords
Electrochromism; Donor-acceptor; Substitution effect; Fluorine
Categories
Funding
- [BAP-01-03-2013-013]
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Design, synthesis, and electrochemical properties of two novel donor-acceptor-donor type benzimidazole and thiophene based monomers; 2-(4-fluorophenyl)-4,7-di(thiophen-2-yl)-1H-benzo[d]imidazole (BIPF) and 2-(3-fluorophenyl)-4,7-di(thiophen-2-yl)-1H-benzo[d]imidazole (BIMF) were highlighted. The position of fluorine as a substituent was varied from para- to meta- in order to investigate position effects on the electrochemical and optical properties of electrochemically synthesized polymers. Both polymers were p type dopable and they can be switched between orange and blue color during p-doping/dedoping. Significant improvements in the percent transmittance for PBIMF were observed compared to similar molecules in literature. (C) 2013 Elsevier Ltd. All rights reserved.
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