【摘要】 合成了一种含线状N4O2配位点的配体1,2-二(6-羧基吡啶-2-甲胺基)乙烷(H2L),通过红外光谱、核磁共振谱对其结构进行了表征.以H2L为配体与Tb(Ⅲ)合成了环状结构的二元配合物和以2,2’-联吡啶(bipy)为第二配体的三元配合物,并通过红外光谱、差热-热重分析和荧光光谱对配合物进行了表征及发光性质研究.结果表明:所有配合物均能发射Tb(Ⅲ)的特征光谱,最强发射峰在545 nm左右,配体极好地敏化了稀土离子的发光.第二配体的引入使三元配合物的荧光强度明显大于二元配合物的荧光强度.更多还原

【Abstract】 A ligand(H2L) containing linear N4O2 coordination sites was synthesized,and its chemical structure was confirmed by infrared spectroscopy and nuclear magnetic resonance spectroscopy.Its binary Tb(Ⅲ) complex having macrocycle structure and ternary complex with 2,2 ’-bipyridine as the second ligand were prepared.And their structures and luminescent properties were investigated by IR,TG-DTA and fluorescence spectra.The results showed that the complexes emit strong characteristic fluorescence of Tb(Ⅲ) under UV excitation,the ligand is an excellent sensitizer to Tb(Ⅲ),and the fluorescence intensity of the ternary complex is significantly greater than that of the binary complex.更多还原