2,2′-(1,2-亚苯基二氧)二(N-苯基乙酰胺)及其稀土配合物的合成、表征与荧光性质  

Synthesis, Characterization and Fluorescence Properties of 2,2′-(1,2-Phenylenebis-(oxy))bis(N-phenylacetamide) and Their Lanthanide Complexes

作　　者：赵丽娜[1] 吴伟娜[1] 袁文兵[1] 闫兰[1] 

机构地区：[1]兰州大学化学化工学院,兰州730000

出　　处：《应用化学》2007年第9期1098-1100,共3页Chinese Journal of Applied Chemistry

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。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 = La^3＋ , Sm^3＋, Eu^3＋, Gd^3＋ , Tb^3＋, Dy^3＋ ） , and the yields were about 78%. In these complexes, the NOr 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 Eu^3＋ and Tb^3＋ , 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 Tb^3＋ is better than that to Eu^3＋.

关 键 词：稀土 芳香族酰胺 配合物 合成 荧光性质 

分 类 号：O614.3[理学—无机化学] O611.6[理学—化学]