| 偶氮染料在酸性介质中的电还原性质 |
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| 引用本文： | 彭孝军,杨锦宗.偶氮染料在酸性介质中的电还原性质[J].高等学校化学学报,1993,14(1):62-64. |
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| 作者姓名： | 彭孝军 杨锦宗 |
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| 作者单位： | 南开大学化学系，南开大学化学系，大连理工大学化工学院 天津 300071，天津 300071 |
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| 摘 要： | 研究了4个偶氮染料在酸性介质中的电还原性质。偶氮基在酸性介质中的还原均为不可逆四电子一步全还原。邻、对位上有吸电子基(如—CO_2Bu-n)的偶氮基较间位有吸电子基时更易被还原。分子中同时含有偶氮基和硝基时,偶氮基先被还原。
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| 关 键 词： | 偶氮染料 还原电位 酸性介质 |
Electrochemical Reduction Properties of Azo Dyes in Acidic Media |
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| PENG Xiao-Jun,WANG Ji-Tao.Electrochemical Reduction Properties of Azo Dyes in Acidic Media[J].Chemical Research In Chinese Universities,1993,14(1):62-64. |
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| Authors: | PENG Xiao-Jun WANG Ji-Tao |
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| Abstract: | The electrochemical reduction of four azo dyes in acid media were studied. All of the electro-reductions of azo groups are irreversible one-step and four-electron reductions. The ortho and para electron-withdrawing substituents(e. g. -COOBu-R) made the azo groups be reduced more easily than meta one. The azo group is prior to nitro group to be reduced in the media when a dye contains both of them. |
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| Keywords: | Azo dye Electrochemistry of azo dyes Polarography Reduction potential Silver dye bleach photographic material |
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