【摘要】 合成了一种新的芳香族酰胺配体2,2′-(1,2-亚苯基二氧)二(N-苯基乙酰胺)及其稀土(La,Eu,Tb,Dy,Sm,Gd)硝酸盐配合物,通过核磁共振谱、元素分析、摩尔电导、红外光谱、差热等测试技术对其进行了结构表征。结果表明,稀土配合物的可能结构为:[REL(NO3)3]·H2O(RE=La3+、Sm3+、Eu3+、Gd3+、Tb3+、Dy3+),配合物产率约为78%。在稀土配合物中,作为抗衡阴离子的3个硝酸根均以双齿的配位方式与稀土配位,稀土配位数为10,并且还有1个结晶水。在298K下对配合物[EuL(NO3)3]·H2O和[TbL(NO3)3]·H2O的固体荧光性质进行了研究。结果发现,它们分别发射Eu3+和Tb3+稀土离子的特征荧光,且配合物[TbL(NO3)3]·H2O的荧光比[EuL(NO3)3]·H2O的荧光强。说明此芳香族酰胺配体敏论Tb3+发光比敏化Eu3+发光程度大。更多还原

【Abstract】 The synthesis of a new aryl amide-based ligand:2,2′-(1,2-phenylenebis(oxy))bis-(N-plenylacetamide)(L) and its rare earth complexes(RE=La, Eu, Tb, Dy, Sm, Gd) is reported. All the compounds were characterized by 1H NMR, elemental analysis, molar conductivity, IR and TG-DTA. The formular of these complexes may be REL(NO3)3·H2O(RE=La3+,Sm3+,Eu3+,Gd3+,Tb3+,Dy3+), and the yields were about 78%. In these complexes, the NO-3 groups which act as the counter anions are in bidentate coordination with the RE ions, and the coordination number may be 10. The fluorescent properties of [EuL(NO3)3]·H2O and [TbL(NO3)3]·H2O in solid state were determined at 298 K. The complexes exhibit the characteristic emissions of Eu3+ and Tb3+, respectively. In addition, the fluorescent intensity of [TbL(NO3)3]·H2O is stronger than that of [EuL(NO3)3]·H2O. This also shows that the luminescence sensitizing effect of the aryl amide-based ligand to Tb3+ is better than that to Eu3+.更多还原