中华医学超声杂志

应用化学 ›› 1990, Vol. 0 ›› Issue (4): 47-51.

• 研究论文 • 上一篇    下一篇

meso-四(4-磺基苯基)卟啉(TPPS)及其锌配合物(ZnTPPS)的伏安法研究

李国刚, 林中鹏, 高小霞   

  1. 北京大学化学系 北京 100871
  • 收稿日期:1989-07-11 修回日期:1989-11-20 出版日期:1990-08-10 发布日期:1990-08-10
  • 基金资助:
    国家自然科学基金委员会

VOLTAMMETRIC STUDY OF MESO-TETRA(P-SULPHONATE-PHENYL)PORPHYRIN(TPPS)AND ITS ZINK COMPLEX

Li Guogang, Lin Zhongpeng, Gao Xiaoxia   

  1. Department of Chemistry, Peking University, Beijing 100871
  • Received:1989-07-11 Revised:1989-11-20 Published:1990-08-10 Online:1990-08-10

PDF

438

被引次数

21 | 7

摘要： 本文用直流极谱法,循环伏安法研究了TPPS及其锌配合物ZnTPPS的极谱还原性质。实验表明TPPS的第一步电极反应为可逆的两电子还原过程,有两个H+参与反应。ZnTPPS第一步还原为不可逆电极过程,有一个H+参与。循环伏安图表明ZnTPPS还原时或还原后有Zn(Ⅱ)的还原,可能是ZnTPPS的离解所致。TPPS和ZnTPPS在汞电极有相近的强吸附作用。测算了吸附等温式,饱和吸附量,吸附分子的面积,吸附系数和吸附自由能等参数。

关键词: 四磺基苯基卟啉, 四磺基苯基锌卟啉, 伏安法

Abstract: In the solution of (0.4 mol KOH + 0.6mol NH4Cl )/L PH = 9.5 TPPS produces three po-larographic waves. The first step of reduction which involves 2H+ is a 2e reversible electrodeprocess. Being coordinated with Zn(Ⅱ), the complex of ZnTPPS gave two reduction wavesand one oxidation wave. The first reduction wave of ZnTPPS is reversible and involves oneH+. Redunction of Zn2+ during or after the first reduction wave may result from the disso-ciation of ZnTPPS. The nearly equal strong adsorption of TPPS and ZnTPPS on Hg electrode was observedand Γ50,β0, K0 and √G0 were cal culated.

Key words: meso-tetra-(P-su'phenate-phenyl)porphyrin, meso-tetra(P-sulphonate-phenyl)zine(Ⅱ)porphyrin, voltammetry

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