| Autor: |
Liang-Ren Huang, Tzong-Liu Wang, Yi-Kai Chih, Feng-Jiin Liu, Wen-Churng Lin, Chien-Hsin Yang |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Polymer. 48:3237-3247 |
| ISSN: |
0032-3861 |
| DOI: |
10.1016/j.polymer.2007.04.013 |
| Popis: |
A self-assembly technique and copolymerization were used to buildup a self-doped polyaniline (SPANI) ultra-thin film on an indium-tin oxide (ITO) substrate. The monomers used were aniline and its derivative MSAN ( m -aminobenzenesulfonic acid). Successful MSAN/AN copolymerization and film formation were simultaneously performed in aqueous solution with the addition of oxidant (APS, ammonium persulfate). The film deposition rate of a high AN/MSAN ratio system is generally higher than that of a low AN/MSAN ratio system. Cyclic voltammetry, UV–vis spectroscopy, and α-step instruments indicate a systematic dependence of the film thickness of these ultra-thin films on the assembly time and temperatures. The Auger depth profile reveals the elemental distribution in these films and exhibits different deposition rates between AN and MSAN. XPS N 1s spectra also show the variation of the degree of doping. This SPANI film can be used as an electrochromic electrode in a corresponding device. Carboxyl-terminated-butadiene-acrylonitrile (CTBN) blended with LiClO 4 was used as a solid polymer electrolyte. A total solid electrochromic device was assembled as ITO/SPANI/LiClO 4 –CTBN/PEDOT:PSS/ITO, where PEDOT:PSS is poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) as the counter complementary electrode. The device was pale gray at −1.5 V and blue at +1.5 V. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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