影像科学与光化学 ›› 1989, Vol. 7 ›› Issue (4): 13-24.DOI: 10.7517/j.issn.1674-0475.1989.04.13

• 研究论文 • 上一篇    下一篇

循环伏安法研究显影剂的电化学行为

毛英, 周本茂, 任新民   

  1. 中国科学院感光化学研究所, 北京 100012
  • 收稿日期:1988-03-29 修回日期:1989-02-23 出版日期:1989-11-20 发布日期:1989-11-20
  • 通讯作者: 周本茂
  • 基金资助:
    国家自然科学基金

A CYCLIC VOLTAMMETRIC STUDY OF THE ELECTROCHEMICAL BEHAVIOR OF COLOR DEVELOPERS

MAO YING, ZHOU BEN-MAO, REN XIN-MIN   

  1. Institute of Photographic Chemistry, Academia Sinica, Beijing 100012, P.R. China
  • Received:1988-03-29 Revised:1989-02-23 Online:1989-11-20 Published:1989-11-20

摘要: 本文用循环伏安法对几种显影剂及其类似物DEPPD、DEPAP和TEPPD的电化学进行了研究。实验结果证明,DEPPD经一步氧化成醌二亚胺(QDI),而TEPPD则分两步氧化;DEPAP在pH<7时一步氧化成醌亚胺(QMI),pH>7时分两步氧化。在碱性条件下,各氧化产物可发生明显的脱氨反应。由实验测得的E 1/2与pH的关系,估算了它们的去质子化常数。

关键词: 循环伏安法, 显影剂, 显影机理

Abstract: The electrochemical behavior of some color developers were studied using cyclic voltam-metry. DEPPD, DEPAP and TEPPD were chosen to represent different structural types. It was shown that DEPPD can be oxidized to QDI in one step, whereas TEPPD to QDI in two steps, DEPAP can be oxidized to QMI in one step at pH<7 and in two steps at pH>7. The deamination of the oxidized developers can occur apparently in the alkaline solution. The relation between El/2 and pH for the above color developers were established, and the deproto-nation constants were estimated.

Key words: Cyclic voltammetry, Developers, Electrochemical behavior