| 光谱学与光谱分析 |
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| Synthesis, Characterization and Fluorescence of Eu3+,Tb3+ Complexes with 2-Thiophencarboxylic Acid and 2,2′-Bipyridine |
| BAO Jin-rong1,ZHAO Yong-liang1,ZHU Xiao-wei2 |
1. The College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
2. Medicine College, Inner Mongolia Medical College, Hohhot 010058, China |
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Abstract Two binary complexes of Eu3+ and Tb3+ with 2-thiophene carboxylic acid and two ternary complexes of Eu3+ and Tb3+ with 2-thiophene carboxylic acid(L)-2, 2′-bipyridine were synthesized. By elemental analysis, rare earth coordination titration，and molar conductivities studies，the compositions of the complexes were suggested as REL3·2H2O and REL3L′·C2H5OH(RE=Eu, Tb, L=2-thiophene carboxylic acid, L′=2, 2′-bipyridine) respectively. The ligands and coordination compounds were studied by means of IR spectra，1H NMR and fluorescence excitation and emission spectra. IR spectra and 1H NMR studies indicate that 2-thiophene carboxylic acid was bonded with RE(Ⅲ) through oxygen atoms in the carboxyl group, and 2, 2′-bipyridine ligand was bonded to RE(Ⅲ) through nitrogen atoms. The fluoresence spectra showed that the fluorescence emission intensity of ternary complexes was stronger than that of the binary complexes.
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Received: 2005-12-16
Accepted: 2006-03-28
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Corresponding Authors:
BAO Jin-rong
E-mail: nmbaojinrong@sina.com
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| Cite this article: |
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BAO Jin-rong,ZHAO Yong-liang,ZHU Xiao-wei. Synthesis, Characterization and Fluorescence of Eu3+,Tb3+ Complexes with 2-Thiophencarboxylic Acid and 2,2′-Bipyridine [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(03): 539-542.
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https://www.gpxygpfx.com/EN/Y2007/V27/I03/539 |
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