摘要
在水溶液中合成铕与5-氨基间苯二甲酸的配合物。该配合物在紫外灯下发出明亮的红光,紫外-可见吸收光谱表明配合物的紫外吸收主要是配体的吸收;红外光谱的结果表明配合物中Eu3+与羰基氧双齿螯合配位;荧光光谱研究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,发光强度最高的是波长为616nm的5D0→7F2跃迁,峰形尖锐,半峰宽仅7nm,Eu3+处于无反演对称中心格位上,荧光发光机制属于M-M型。
Complex of europium with 5-aminoisophthalic acid was synthesized in the aqueous solution. The complex has bright red light when excited by UV light. UV-Vis absorption spectra of the complex show that the UV absorption is mainly from the ligand. FTIR spectra indicate that in the complex Eu3＋ was coordinated with carbonyl oxygen in the form of bidentate chelate. And excellent fluorescence property is confirmed by the fluorescence spectrum. Optimal excitation wavelength is 395 nm, and the emission spectrum is the characteristic spectrum of Eu3＋; there is a sharp and strong red peak with 7 nm mid-width at 616 nm, which is attributed to 5D0→7F2 transition from Eu3＋ ions; Eu3＋ exists in the site without inversion symmetrical center. Meanwhile, the fluorescence spectrum of the complex reveals the M-M fluorescence mechanism
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第6期1002-1004,共3页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50625206)
关键词
稀土配合物
5-氨基间苯二甲酸
铕
荧光
rare earth complex 5-aminoisophthalic acid europium luminescence
作者简介
作者简介：李维芬，女，1955年生，副教授，河北民族师范学院，河北承德067000，电话：0314-2950557，E-mail：liweifen@126．com
