A novel conducting polymer based on terthienyl system bearing strong electron-withdrawing substituents and its electrochromic device application

Date

2008-7

Author

Asil Alptekin, Demet
Algı, Fatih
Önal, Ahmet Muhtar

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A 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).

Subject Keywords

Electrochemical polymerization, Electrochromic device, Conducting polymers, Polythiophene, Electron-withdrawing substituents

URI

https://hdl.handle.net/11511/28244

Journal

Journal of Electroanalytical Chemistry

DOI

https://doi.org/10.1016/j.jelechem.2008.02.027

Collections

Department of Chemistry, Article

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Citation Formats

D. Asil Alptekin, F. Algı, and A. M. Önal, “A novel conducting polymer based on terthienyl system bearing strong electron-withdrawing substituents and its electrochromic device application,” Journal of Electroanalytical Chemistry, pp. 87–93, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28244.