Synthesis, characterization and fluorescence properties of novel pyridine dicarboxylic acid derivatives and corresponding Tb(III) complexes
作者:Guo-liang Gu、Rui-ren Tang、You-hu Zheng、Xiao-ming Shi
DOI:10.1016/j.saa.2007.12.006
日期:2008.11
reaction used. The fluorescent intensities of these complexes with corresponding complexes with single pyridine-2,6-dicarboxylic acid unit was compared. The result has shown that the ligands with two pyridine-2,6-dicarboxylic acid units are the excellent sensitizers to lanthanide fluorescence. Also, we investigated the fluorescence properties of these complexes in different solution and in different pH value
包含两个吡啶2,6-二羧酸共轭单元,4-(2-(2,6-二甲苯基-吡啶吡啶-4-基)乙烯基)吡啶-2,6-二羧酸(L 1)和4的两个新型配体-(4-(2-(2,6-二羧基吡啶-4-基)乙烯基)苯乙烯基)吡啶-2,6-二羧酸(L 2)及其与Tb(III)的配合物已经合成,并通过元素分析,红外光谱和NMR进行了表征。通过使用Wittig-Horner反应,优化了配体的合成路线,配体的收率达到78%以上。比较了这些配合物与具有单个吡啶-2,6-二羧酸单元的相应配合物的荧光强度。结果表明,具有两个吡啶-2,6-二羧酸单元的配体是对镧系元素荧光的优异敏化剂。此外,我们研究了这些配合物在不同溶液和不同pH值下的荧光特性。由于其出色的绿色发射体,它们将成为有机发光器件和医学诊断应用的潜在候选材料。