摘要
本文合成了以Eu3+为中心离子,芳香羧酸、邻菲咯啉和噻酚甲酰三氟丙酮为第一配体,油酸为第二配体的七种新的铕三元荧光配合物。通过红外光谱分析、紫外光谱分析、元素分析、EDTA配位滴定分析以及电导率的测定对铕三元荧光配合物的组成及结构进行表征。通过荧光光谱分析,确定了铕三元荧光配合物的最佳激发波长,在最佳激发波长下测定了它们的发射光谱。结果表明,所有铕三元荧光配合物的荧光发射光谱均相似,发出了铕离子的5D0-7F2,5D0-7F1,5D0-7F0(很弱)特征光,荧光表现为红色。在含油酸配体的铕三元荧光配合物中,各第一配体向铕离子传递光能的能力为:邻菲咯啉>噻吩甲酰三氟丙酮>大茴香酸>间氯苯甲酸>苯甲酸>对甲基苯甲酸>对羟基苯甲酸。
Seven new ternary complexes of europium with the first ligand of aromatic carboxylic acid, 1 , 10 - phenanthroline and thienyltrifluoroacetone, and the second ligand of oleic acid and undecenoic acid have been synthesized. Their molecular compositions and structures were characterized by means of elemental analysis, EDTA titrimetric method, conductivity determination, FT-IR and UV spectroscopies; their thermal properties were studied by thermal analysis instrument. Their luminescent properties were investigated by means of fluorescence instrument, the results indicated that their all spectra were similar, and emitted the characteristic peaks of europium ion, their fluorescence displayed red. As far as europium ternary complexes with oleic acid are concerned. The ability order of the first ligand transferring light energy was that of 1, 10- phenanthroline 〉 thienyltrifluoroacetone 〉 methoxybenzoic acid 〉 m-chlorobenzoic acid 〉 benzoic acid 〉 p- methylbenzoic acid 〉 p -hydroxylbenzoic acid.
出处
《福建分析测试》
CAS
2007年第4期5-11,共7页
Fujian Analysis & Testing
关键词
铕
长链配体
配合物
荧光
油酸
Europium
long - chain Ligand
Complex
Fluorescence
oleic acid
