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分别以丁二酸(L1)、2-甲基丁二酸(L2)、2-亚甲基丁二酸(L3)、2-巯基丁二酸(L4)、2-溴基丁二酸(L5)、2-羟基丁二酸(L6)为第一配体,2,2’-联吡啶(bipy)为第二配体,合成了6种稀土铕的三元配合物,通过差热分析及稀土络合滴定确定了配合物的组成为Eu2(L)3bipy.2H2O(L=丁二酸及其衍生物).通过红外光谱、荧光光谱表征了配合物的性质.对6种配合物进行荧光光谱研究,结果表明:配体取代基的变化对配合物荧光激发峰和发射峰的位置变化影响很小,但对配合物的荧光强度有较大影响,其配合物的荧光强度大小为:-SH>-Br>-H>-OH>-CH3>-CH2.
Respectively, with succinic acid (L1), 2-methylsuccinic acid (L2), 2-methylsuccinic acid (L3), 2-mercaptosuccinic acid (L4) L5), 2-hydroxysuccinic acid (L6) as the first ligand and 2,2’-bipyridyl as the second ligand, six ternary complexes of rare earth europium were synthesized and characterized by differential thermal analysis And the complexation titration of rare earths to determine the composition of the complex Eu2 (L) 3bipy.2H2O (L = succinic acid and its derivatives) by infrared spectroscopy, fluorescence spectroscopy of the properties of the complexes were 6 complexes Fluorescence spectroscopy. The results showed that: the changes of the ligand substituents had little effect on the fluorescence excitation peak and the emission peak position of the complex, but had a great influence on the fluorescence intensity of the complex, the fluorescence intensity of the complex was: -SH> -Br> -H> -OH> -CH3> -CH2.