影像科学与光化学 ›› 1996, Vol. 14 ›› Issue (2): 150-157.DOI: 10.7517/j.issn.1674-0475.1996.02.150

• 研究论文 • 上一篇    下一篇

不对称五氮齿类卟啉镉的合成及电子吸收光谱特性研究

孙文芳, 王夺元   

  1. 中国科学院感光化学研究所, 北京 100101
  • 收稿日期:1995-10-13 修回日期:1996-01-12 出版日期:1996-05-20 发布日期:1996-05-20
  • 通讯作者: 王夺元
  • 基金资助:
    国家自然科学基金

SYNTHESIS OF ASYMMETRIC PENTAAZADENTATE PORPHYRIN-LIKE CADMIUM COMPLEXES AND STUDIES OF THEIR ELECTRONIC ABSORPTION SPECTRAL PROPERTIES

SUN Wenfang, WANG Duoyuan   

  1. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China
  • Received:1995-10-13 Revised:1996-01-12 Online:1996-05-20 Published:1996-05-20

摘要: 本文报道几种不对称类卟啉镉(Ⅱ)配合物的合成及其结构表征,并对其电子吸收光谱特性进行了研究。结果表明,这类配合物的0-0跃迁在λmax>690nm有一个允许跃迁的强吸收带,且随π电子数及取代基的不同有着明显差别;在强极性溶剂中,该类配合物可发生H聚集;将跃迁能量、振子强度等性质与取代基Hammett常数进行线性相关,揭示了取代基效应对0-0跃迁的影响规律。

关键词: 不对称五氮齿类卟啉镉配合物, 电子吸收光谱, 聚集, Hammett线性相关

Abstract: ln this paper,the synthesis and characterization of several asymmetric porphyrin-like cadmium complexes and their electronic absorption spectral properties are reported.Studies on their absorption spectra show that these complexes exhibite a strong 0-0 transition band at near infrared region,the number of πelectrons and substituents on ρ-position of bezene ring can inflence this band remarkably.H-aggregation occured in strong polar solvents. The linear correlations of Hammett constants with the 0-0 transition energies,and the ratios of the oscillator strengh hare used to probe the conjugated interaction between π electron of macrocycles and metal ion of complexes with the substituents.

Key words: asymmetric pentaazadentate porphyrin-like cadmium complexes, electronic absorption spectra, aggregation, Hammett linear relationships