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。
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.
出处
《感光科学与光化学》
CSCD
1996年第2期150-157,共8页
Photographic Science and Photochemistry
基金
国家自然科学基金
关键词
五氮齿类卟啉
镉
配合物
电子吸收光谱
卟啉
asymmetric pentaazadentate porphyrin-like cadmium complexes,electronic absorption spectra ,aggregation,Hammett linear relationships
