| Electrosynthesis of poly（o-phenylenediamine） in ionic liquid and its properties |
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| 作者姓名： | DU YanFang WANG Huan ZHANG AiJian LU JiaXingt |
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| 作者单位： | Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University,Shanghai 200062, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （Grant No. 20573037） and the Natural Science Foundation of Shanghai （Grant No. 05JC 14070） |
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| 摘 要： | Ionic liquid 1-ethyl-3-methylimidazolium bromide (EMIMBr) and N-methylimidazolium tetrafluorobo-rate (HMIMBF4) have been used as solvent and electrolyte for the electropolymerization of o-phenylenediamine at glassy carbon electrode by cyclic voltammetry. It was found that monomer was more easily oxidized in ionic liquid than acidic aqueous solution,and oxidative potential was reduced by 0.725 and 0.455 V,respectively. Electrode modified with poly(o-phenylenediamine) (PPD) has obvi-ous electrochemical activity in acid solution (pH 1-4). The apparent diffusion coefficient (Dapp) of PPD film is measured by chronocoulometry and chronoamperometry. The polymer structure is measured by UV and IR. IR spectrometry reveals that poly(o-phenylenediamine) has phenazine ring structure. The heat stability of polymer is observed from thermogravimetry.
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| 关 键 词： | 电聚合 离子液体 聚o-苯二胺 电气化学特性 |
| 收稿时间： | 11 August 2006 |
| 修稿时间： | 2006-08-11 |
Electrosynthesis of poly(<Emphasis Type="Italic">o</Emphasis>-phenylenediamine) in ionic liquid and its properties |
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| DU YanFang WANG Huan ZHANG AiJian LU JiaXingt.Electrosynthesis of poly(o-phenylenediamine) in ionic liquid and its properties[J].Chinese Science Bulletin,2007,52(16):2174-2178. |
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| Authors: | Du YanFang Wang Huan Zhang AiJian Lu JiaXing |
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| Institution: | (1) Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University, Shanghai, 200062, China |
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| Abstract: | Ionic liquid 1-ethyl-3-methylimidazolium bromide (EMIMBr) and N-methylimidazolium tetrafluorobo-rate (HMIMBF4) have been used as solvent and electrolyte for the electropolymerization of o-phenylenediamine at glassy carbon electrode by cyclic voltammetry. It was found that monomer was more easily oxidized in ionic liquid than acidic aqueous solution,and oxidative potential was reduced by 0.725 and 0.455 V,respectively. Electrode modified with poly(o-phenylenediamine) (PPD) has obvi-ous electrochemical activity in acid solution (pH 1-4). The apparent diffusion coefficient (Dapp) of PPD film is measured by chronocoulometry and chronoamperometry. The polymer structure is measured by UV and IR. IR spectrometry reveals that poly(o-phenylenediamine) has phenazine ring structure. The heat stability of polymer is observed from thermogravimetry. |
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| Keywords: | ionic liquid electropolymerization poly(o-phenylenediamine) |
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