期刊
SYNTHETIC METALS
卷 211, 期 -, 页码 147-154出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2015.11.019
关键词
Conducting polymer; Aqueous solution; Electrochemical polymerization; PEDOT derivative; Electrochromic
资金
- National Natural Science Foundation of China [51263010, 51303073, 51272096, 51403008]
- Natural Science Foundation of Jiangxi Province [20142BAB206028, 2014BAB216029]
- Science and Technology Landing Plan of Universities in Jiangxi province [KJLD14069]
2'-Aminomethyl-3,4-ethylenedioxythiophene (EDOT-MeNH2) showed unsatisfactory results when its polymerization occurred in organic solvent in our previous report. Therefore, a water-soluble EDOT derivative was designed by using hydrochloric modified EDOT-MeNH2 (EDOT-MeNH2 center dot HCl) and electropolymerized in aqueous solution to form the corresponding polymer with excellent electrochromic properties. Moreover, the polymer was systematically explored, including electrochemical, optical properties and structure characterization. Cyclic voltammetry showed low oxidation potential of EDOT-MeNH2 center dot HCl (0.85 V) in aqueous solution, leading to the facile electrodeposition of uniform the polymer film with outstanding electroactivity. Compared with poly(2'-aminomethyl-3,4-ethylenedioxythiophene) (PEDOT-MeNH2), poly(2'-aminomethyl-3,4-ethylenedioxythiophene salt) (PEDOT-MeNH(3)(+)A(-)) revealed higher efficiencies (156 cm(2) C-1), lower bandgap (1.68 eV), and faster response time (1.4s). Satisfactory results implied that salinization can not only change the polymerization system, but also adjust the optical absorption, thereby increase the electrochromic properties. (C) 2015 Elsevier B.V. All rights reserved.
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