摘要
用2,5-噻吩二羧酸、2,2'-联吡啶与稀土离子(RE=Eu,Dy,Pr)合成了稀土三元配合物。配合物分别用元素分析、差热分析和红外光谱分析进行了表征,确定了配合物组成为RE2L3L12.4H2O(RE=Eu,Dy,Pr,L=2,5-噻吩二羧酸,L1=2,2'-联吡啶)。荧光光谱研究表明,Eu配合物具有良好的荧光性能,最佳激发波长为394 nm,发射光谱为Eu3+的特征光谱,发光强度最高的是波长为614nm的5D0→7F2跃迁,峰形尖锐,半峰宽仅11nm,荧光光谱数据表明,铕配合物具有良好的荧光性能。
Ternary complexes of rare earths （Eu, Dy, Pr） with 2, 5- thiophenedicarboxylic acid （L） and 2, 2＇-bipyridine （ L1 ） were synthesized and characterized by elemental analysis, TG - DTG and FTIR spectra. The compositions of the complexes were confirmed to be RE2L3L12·4H2O （ RE = Eu, Dy, Pr）. The fluorescence property of Eu complex was studied with 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 11 nm mid - width at 614 nm, which is attributed to 5D0→7F2 transition from Eu3＋ ions; Fluorescence spectra show that the fluorescence intensity of Eu3＋ complex is strong.
出处
《稀土》
EI
CAS
CSCD
北大核心
2012年第6期5-8,共4页
Chinese Rare Earths
基金
国家自然科学基金项目资助(21001092)
民族药资源化学国家民委-教育部重点实验室项目资助(2007)
云南民族大学研究生创新项目资助(11HXJS10)
关键词
稀土
配合物
荧光性质
rare earth
coordination compounds
luminescence property
