物理化学学报 >> 1991, Vol. 7 >> Issue (04): 436-442.doi: 10.3866/PKU.WHXB19910412

研究论文 上一篇    下一篇

氧化和加氧酶的化学模拟 I. MPc、MTPP/DMF(M=Fe、Co、Cu、Pe和TPP分别为酞菁和四苯基卟啉环;DMF为N-N '二甲基甲酰胺)体系的电子光谱和吸氧动力学

赵德超; 叶兴凯; 吴越   

  1. 中国科学院长春应用化学研究所,长春 130022
  • 收稿日期:1990-04-18 修回日期:1990-10-31 发布日期:1991-08-15
  • 通讯作者: 吴越

Biomimitics of Oxidase and Oxygenase The Electronic Spectra and the Oxygen Uptake Kintics for MPc and MTPP(M=Fe,Co,Cu,Pc and TPP-Are Dianions of Phthalocyanin and Tetraphenyl-Porphyrine, Respectively)

Zhao De-Chao; Ye Xing-Kai; Wu Yue   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-04-18 Revised:1990-10-31 Published:1991-08-15
  • Contact: Wu Yue

摘要: 通过电子光谱法测定MPc的Q_(0-0)带和MTPP的Soret带吸光度随时间的变化, 研究了MP在DMF介质中的吸氧动力学, 按竞争串行反应机理的处理, 表明MP的催化活性有如下关系:
MPc>MTPP; Fe>Co>Cu
MTPP在空气中的吸氧速率小于在纯氧中的, 其比值约相当于空气中的氧分压; 研究了含硫配体巯基乙醇和含氧配体抗坏血酸对上述体系的影响, 前者使MP谱带发生较大的变化, 吸氧速率常数普遍增大, 后者的影响较小。

关键词: MP(M=Fe,Co,Cu, P=Pc,TPP), 大环配合物, 电子光谱化学, 模拟

Abstract: The kinetics of oxygen-uptake in DMF medium for MPc and MTPP catalytic systems has been investigated by means of measuring the absorbance variation vs time. According to a consecutive reactive mechanism, the activities of MP catalytic systems are in the order.
MPc>MTPP; Fe>Co>Cu
The reaction rates of MTPP with oxygen in air are less than that with pure oxygen, the ratio is roughly the same as to the partial pressure of oxygen in air. The influences of S-ligand ethanethiol and O-ligand Vc on the above systems have also been investigated, the former makes the MP bands having more changes and the reaction rate constants becoming greater, the latter has less influence.

Key words: MP(M=Fe,Co,Cu, P=Pc,TPP), Macro-cyclic Complexes, Electronic Spectra, Biomimitics