北京大学学报(自然科学版)

叶绿素的电化学行为研究
Ⅱ去镁叶绿素和铜-叶绿素的伏安行为研究

乔庆东,高小霞   

  1. 北京大学化学系, 北京,100871
  • 收稿日期:1993-09-08 出版日期:1995-03-20 发布日期:1995-03-20

Studies on the Electrochemical Behaviors of Chlorophyll
(II) Voltammetric Behavior of Pheophytins and Cu-Chla

QIAO Qingdong, GAO Xiaoxia   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1993-09-08 Online:1995-03-20 Published:1995-03-20

摘要: 在文Ⅰ中报道了叶绿素(Ch1)的电化学分析方法并讨论了叶绿素a、b的电还原机理。本篇报道去镁叶绿素(pheophytins)和它的一种金属叶绿素(CuCh1)的电化学行为。在水溶液(含0.3%丙酮)中,Pheo有与卟啉(TPPS, TMPyP)相似的一步还原波,而铜-叶绿素又有与CuTPPS相似的络合物还原波。金属叶绿素环Ⅴ上的羰基仍是活性还原部位。

关键词: 去镁叶绿素, Cu-叶绿素, 循环伏安法

Abstract: In the present investigation, the reductive behaviors of pheophytins a and b in 0.1 mol/L HAc-NaAc solution was studied by first step reversible 2e-, 2H+ peak similar to that of water-soluble porphyrins such as TPPS and TMPyP. The Cu-Chla has a similar step of irreversible (4e-, 2H+)reduction peak to that of CuTPPS. While the reduction of the carbonyl group in the molecule remains the same.

Key words: pheophytin, Cu-pheo, cyclic voltammetry

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