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Citation: ZHAO Li-Na, WU Wei-Na, YUAN Wen-Bing, YAN Lan. Synthesis, Characterization and Fluorescence Properties of 2,2'-(1,2-Phenylenebis-(oxy))bis(N-phenylacetamide) and Their Lanthanide Complexes[J]. Chinese Journal of Applied Chemistry, ;2007, 24(9): 1098-1100. shu

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

1.
Department of Chemistry, Lanzhou University, Lanzhou 730000

Corresponding author: YAN Lan,
Received Date: 18 September 2006
Available Online: 26 March 2007

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 NO₃^- 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⁺.
- lanthanide,
- aryl amide,
- complex,
- synthesis,
- fluorescence properties
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