铕(Ⅲ)-二苯甲酰甲烷-铵阳离子配合物发光性质及 传能过程的溶剂效应研究

1. 中国科学院化学研究所分子科学中心;中国科学院分子动态与稳态结构国家重点 实验室;南京大学化学化工学院
• 发布日期:2000-08-15

Study of solvent effects of luminescent properties and energy transfer processes of Eu(Ⅲ)-dibenzoylmethane-ammonium cation complexes

Sun Zhaoyong;Yu Zhi;Ai Xicheng;Feng Juan;Zhang Guangkang;Zhang Qiyuan

• Published:2000-08-15

Optical properties of Eu(Ⅲ)-dibenzoylmethane-ammonium cation complexes in ethanol, DMF, cyclohexane, which have different polarity, were investigated using UV-vis, fluorescence and transient spectroscopic methods. It is found that the spectroscopic properties of different ammonium cation complexes are almost consistent in the same kind of polar solvent, but slightly different in nonpolar solvent. The luminescent decay curves of the complexes are single exponential in ethanol and DMF, but double exponential in cyclohexane. The calculation results show that the populations of Eu^3^+ ^5D~0 excited states are different in ethanol and DMF.