Asil, DemetCihaner, AtillaAlgi, FatihOnal, Ahmet M.Chemical Engineering2024-07-052024-07-0520081572-66571873-256910.1016/j.jelechem.2008.02.0272-s2.0-44249123490https://doi.org/10.1016/j.jelechem.2008.02.027https://hdl.handle.net/20.500.14411/1048Algi, Fatih/0000-0001-9376-1770; Onal, ahmet muhtar/0000-0003-0644-7180; Asil Alptekin, Demet/0000-0001-6368-7151A novel conducting polymer bearing strong electron-withdrawing substituents (EWS) directly attached to the 3,4-positions of the thiophene ring was synthesized by electrochemical polymerization of diethyl 2,5-di(thiophen-2-yl)thiophene-3,4-dicarboxylate (SSS-Diester). The polymer (PSSS-Diester) was characterized by cyclic voltammetry, FT-IR and UV-vis spectroscopy. The polymer has a reversible redox process and demonstrates a stable electrochromic behavior: reddish orange in the neutral state, brown in the intermediate state and green in the oxidized state. Optical density and response time of the dual-type electrochromic device based on PSSS-Diester were found to be 0.23 and 0.6 s at 623 nm, respectively. It is also noteworthy that the device shows good environmental and redox stability (i.e. 94% of the optical activity of the device retained after 500th switch). (c) 2008 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccesselectrochemical polymerizationelectrochromic deviceconducting polymerspolythiopheneelectron-withdrawing substituentsArticleQ1Q26181-28793WOS:00025700780001325