Tutuncu, EsraOzkut, Merve IcliBalci, BurcuBerk, HasanCihaner, AtillaChemical Engineering2024-07-052024-07-0520190014-30571873-194510.1016/j.eurpolymj.2018.11.0372-s2.0-85057210576https://doi.org/10.1016/j.eurpolymj.2018.11.037https://hdl.handle.net/20.500.14411/2843Berk, Hasan/0000-0002-7206-0892A novel conjugated copolymer, namely poly(3,4-ethylenedioxythiophene-co-1-(3,5-bis(trifluoromethyl)phenyl)-2,5-di(thiophen-2-yl)-1H-pyrrole) (P(EDOT-co-1)) was synthesized via electropolymerization method from a mixture of 3,4-ethylenedioxythiophene and 1-(3,5-bis(trifluoromethyl)phenyl)-2,5-di(thiophen-2-yl)-1H-pyrrole comonomers. The corresponding copolymer has an optical band gap of 1.7 eV and 41% optical contrast at 525 nm with a coloration efficiency of 258 cm(2)/C and 1.4 s switching time. The copolymer has a multi-electrochromic behavior: It has dark purple, purple, gray, green and cyan colors at different oxidation states. Electrochemical stability of P(EDOT-co-1) copolymer was also investigated and it was observed that the copolymer retained 86% of its stability under ambient conditions in the presence of oxygen (without purging the electrolyte solution with any inert gas) according to the current density and 83% according to the deposited charge even after 1000 redox cycles.eninfo:eu-repo/semantics/closedAccessElectropolymerizationCopolymerizationMultielectrochromism, dithienylpyrroleSNS3,5-bis(trifluoromethyl)benzenamine1,4-di(thiophen-2-yl)butane-1,4-dione3,4-EthylenedioxythiopheneEDOTArticleQ1110233239WOS:00045675100002913