利用紫外-可见光谱法和荧光光谱法,考察了三种金属锌卟啉与三种咪唑类客体小分子形成配合物的光谱性质.实验结果表明:(1)咪唑类客体通过配位键将电子转移给锌卟啉,配合物的形成能力与主体中含有不同性质的基团和客体的结构均有关；(2)该类反应是焓驱动、自发进行的配位反应,温度升高不利于配合物的形成；(3)随客体浓度的不断增加,三种主体与咪唑类客体所形成配合物的体系均具有荧光猝灭的效应.%The spectroacopic properties were studied between three kinds of Zn porphyrin and imidazoles derivatives by means of UV-vis spectroscopy and fluorescence spectroscopy. The results showed: ( 1) the electron was transferred from imidazoles derivatives to Zn porphyrin by coordination bond,the formative ability of complex had been related with the character of substituent group in host and structure of guest; (2)the reaction was spontaneous,the driving force was the change of enthalpy,the increasing temperature was disadvantage factor for the reaction; (3) the fluorescence quenching was exhibited in the system of coordination reaction between different host and different guest.
展开▼
