摘要
分别合成了以对苯基苯甲酸为配体,铕、铽及掺杂铕、铽为中心的固态配合物。经元素分析、摩尔电导及差热-热重分析,推测其组成分别为:铕配合物:EuL3.3H2O、Eu0.5La0.5L3.3H2O、Eu0.5Y0.5L3.3H2O;铽配合物:TbL3.2H2O、Tb0.5La0.5L3.2H2O、Tb0.5Y0.5L3.3H2O(L=■-■-COO-。红外光谱、紫外光谱及核磁共振氢谱分析表明,对苯基苯甲酸的羧基氧原子与稀土离子配位。配合物的荧光光谱测定表明,铕系列和铽系列配合物都可发出其特征荧光,铕异核稀土配合物的荧光强度与相同配体的铕配合物相比,均有不同程度提高。
Two series solid complexes of europium and terbium with biphenyl 4-carboxylie acid have been synthesized and characterized in this article. Their elemental analysis and TG-DTA studies indicate that the complexes have the composition of EuL3 · 3H2O, Eu0.5La0.5 L3 · 3H2O, Eu0.5Y0.5 L3 · 3H2O; Tb L3· 2H2O,Tb0.5La0.5 L3 · 2H2O and Tb0.5Y0.5 L3· 3H2O. Their IR spectra ,UV,：HNMR and molar conductivities have heen studied. The results indicate that biphenyl 4-carboxylic acid is bounded with RE^3＋. The fluorescence spectra of the rare earth complexes show that the fluorescent intensity of a series of europium complexes is higher than that of a series of terbium complexes. The fluorescent intensity of heteronuclear europium complexes is higher than that of homonuclear europium complexes.
出处
《稀土》
EI
CAS
CSCD
北大核心
2007年第4期5-8,共4页
Chinese Rare Earths
基金
国家自然科学基金项目资助(20461002)
教育部项目资助(Z-2004-2-15029)
内蒙古自然科学基金项目资助(200308020104)
关键词
对苯基苯甲酸
铕配合物
铽配合物
荧光光谱
europium complex
terbium complex
biphenyl 4-carboxylic acid
fluorescence spectra
