| 光谱学与光谱分析 |
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| Studies on the Preparation，Characterization and Fluorescence Property of Rare Earth with Alizarin Yellow R |
| TANG Hui-an1, 2，WANG Xiao-fang1，LEI Xin-you1，YANG Ru-dong2 |
1. Chemistry Department of Tianshui Normal University，Tianshｕi 741001，China
2. College of Chemistry and Chemical Engineering of Lanｚhou University，Lanｚhoｕ 730000, China |
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Abstract Four rare earth complexes with alizarin ｙellow R have been prepared and characterized by elemental analysis, IR, UV and 1H NMR in this paper. Their general formula was determined as the following: Na[REL2]·2H2O(RE=Sm, Eu, Tb, Y. NaHL=alizarin ｙellow R). The IR shows that the phenolic proton dissociates and the phenolic oxygen atom is coordinated to metals. The carboxylic oxygen atom is coordinated to metals by single dentate. The phenolic oxygen atom together with carboxylic oxygen atom chelates with ion forming a six-mumber ring. Two water molecules are coordinated to rare earth ion. The spectrum of the ligand shows that a band at 398 nm is shifted to 351-355 nm in the complexes showing that the carbonyl oxygen and phenolic oxygen atom are coordinated to the metal ion. The oxygen atom of group —NO2 and nitrogen atom of NN do not bind to metal ions. The strong red fluorescence of Eu(Ⅲ) complexes is observed in the light of fluorescence lamp. Two strong fluorescence peaks of complex Na[EuL2]·2H2O may be attributed to the fluorescence spectra of 5D0→7F1 and 5D0→7F2 transitions of Eu3+.
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Received: 2002-12-16
Accepted: 2003-05-16
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Corresponding Authors:
TANG Hui-an
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| Cite this article: |
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TANG Hui-an,WANG Xiao-fang,LEI Xin-you, et al. Studies on the Preparation，Characterization and Fluorescence Property of Rare Earth with Alizarin Yellow R [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(08): 975-977.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I08/975 |
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[2] ＷU Ji-ｇui，MA Xian-xian(吴集贵, 马娴贤). J． of the Chinese Ｒare Earth Societｙ(中国稀土学报)，1988，6(4)：9.
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