摘要
在水溶液中合成了铕与5-氰基间苯二甲酸配合物,它在紫外线辐照下能发出明亮的红光。元素分析表明,其组成为EuLCl.3H2O(L=C6H3CN(COO)22-),配合物的紫外吸收主要是配体的吸收;红外吸收光谱表明,配合物中Eu3+与羰基氧双齿螯合配位;荧光光谱表明,配合物具有良好的荧光性能,最佳激发波长为395nm,发射光谱为Eu3+的特征光谱,最强发射峰位于616nm,Eu3+处于无反演对称中心格位上,荧光发光机理属于M-M型。
In this paper,complex of europium with 5-Cyanoisophthalic acidhas been synthesized in the aqueous solution.Bright red has been observed when excited by UV light.The molecular structure of the complex of EuLCl·3H2O（L = C6H3CN（COO）22-）,has been identified by elemental analysis.UV absorption of the complex is mainly from the ligand.The complex has been chelated through Eu3＋ and carbonyl oxygen of the ligand,which has been confirmed by IR,and excellent fluorescence property has been confirmed by the fluorescence spectrum.Optimal excitation wavelength is 395nm,and the emission spectrum of the complex indicated that there was a strong peak at 616nm and that the complex has no symmetrical center.Meanwhile,the fluorescence spectrum of the complex suggests the M-M fluorescence mechanism.
出处
《稀土》
EI
CAS
CSCD
北大核心
2009年第4期12-15,共4页
Chinese Rare Earths
基金
国家自然科学基金项目资助(50625206)
关键词
稀土配合物
5-氰基间苯二甲酸
铕
荧光
rare earth complex
5-cyanoisophthalic acid
europium
luminescence
作者简介
李维芬（1955-），女，河北衡水人，副教授，主要从事稀土发光材料的研究。
