| 光谱学与光谱分析 |
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| Synthesis and Luminescence Properties of Europium(Ⅲ) Complexes with Camphoric Acid and 1,10-Phenanthroline |
| WANG Xi-gui1，WU Hong-ying1，WENG Shi-fu2，WU Jin-guang2 |
1. Department of Chemistry, Inner Mongolia Normal University, Huhhot 010022, China
2. College of Chemistry and Molecular Engineering, Peking University, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing 100871, China |
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Abstract The complexes of europium(Ⅲ) with camphoric acid and 1,10-phenanthroline have been synthesized and characterized by elemental analysis, 1H NMR, IR and FT-Raman. The compositions of the complexes have been confirmed to be Eu2(CA)3·2H2O and Eu2(CA)3(phen)2 (CA: camphoric acid, phen: 1,10-phenanthroline). In addition, the camphoric acid and 1,10-phenanthroline-mixed coordination compounds of Eu3+-La3+ have been synthesized. Three-dimensional fluorescence spectra showed that the optimum excitation wavelength was 310 nm, and the strongest emission wavelength was 612 nm. When 310 nm light was used as an excitation wavelength, the seven bands due to 5D0-7F0(579 nm), 5D0-7F1(594 nm), 5D0-7F2(612 and 620 nm), 5D0-7F3(650 nm) and 5D0-7F4(689 and 697 nm) were observed between 550-700 nm, in which 5D0-7F2 transitions contain two lines(612 and 620 nm), and 5D0-7F4 transitions also contain two lines(689 and 697 nm). The excitation spectra showed that excitation band was from 240 to 340 nm, and the maximum was at about 310 nm. The fluorescence studies on all of samples showed that the fluorescence intensities of europium ions were sensitized by lanthanum ions, but the peak position of their emission band did not shift obviously.
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Received: 2002-08-26
Accepted: 2003-02-15
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Corresponding Authors:
WANG Xi-gui
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| Cite this article: |
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WANG Xi-gui,WU Hong-ying,WENG Shi-fu, et al. Synthesis and Luminescence Properties of Europium(Ⅲ) Complexes with Camphoric Acid and 1,10-Phenanthroline [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(07): 799-802.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I07/799 |
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