高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (1): 62.

• 研究论文 • 上一篇    下一篇

偶氮染料在酸性介质中的电还原性质

彭孝军1, 王积涛1, 杨锦宗2   

  1. 1. 南开大学化学系, 天津 300071;
    2. 大连理工大学化工学院
  • 收稿日期:1991-09-09 修回日期:1992-09-19 出版日期:1993-01-24 发布日期:1993-01-24
  • 通讯作者: 彭孝军
  • 基金资助:

    国家自然科学基金

Electrochemical Reduction Properties of Azo Dyes in Acidic Media

PENG Xiao-Jun1, WANG Ji-Tao1, YANG Jin-Zong2   

  1. 1. Departent of Chemistry, Naxkai University, Tianjin, 300071;
    2. School of Chemical Technology, Dalian Umivrsity of Technology
  • Received:1991-09-09 Revised:1992-09-19 Online:1993-01-24 Published:1993-01-24

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—CO2Bu-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。

关键词: 偶氮染料, 偶氮染料电化学, 极谱, 还原电位, 银漂感光材料

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.

Key words: Azo dye, Electrochemistry of azo dyes, Polarography, Reduction potential.Silver dye bleach photographic material

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