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以乙酸和乙酸铵为配体,合成了新颖发光稀土配合物,通过元素分析、红外光谱、热重分析等手段对配合物进行了表征,确定其结构为NH4[RE(Ac)4.H2O](RE=Tb或Eu).结果表明,配合物中羧基以螯合、双齿和单齿方式与稀土离子配位;并通过荧光光谱分析、荧光寿命研究了其发光性能,配合物能发射强的稀土离子的特征荧光且有较长的荧光寿命.
The novel luminescent rare earth complexes were synthesized by using acetic acid and ammonium acetate as ligands. The complexes were characterized by elemental analysis, IR, TG and so on. The structures of the complexes were identified as NH4 [RE (Ac) 4 · H2O] (RE = Tb or Eu). The results show that the carboxyl groups of the complexes coordinate with the rare earth ions by chelation, bidentate and monodentate. The luminescent properties of the complexes were studied by fluorescence spectroscopy and fluorescence lifetime. The rare earth ions are characteristic of fluorescence and have a longer fluorescence lifetime.