| 光谱学与光谱分析 |
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| Study on the Transition of Green，Yellow Fluorescence of Ternary Complexes of Tb-Benzoic Acid-1,10-Phenanthroline |
| WANG Xi-gui1，WU Hong-ying1，YAO Guang-qing2，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 Application, Beijing 100871, China |
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Abstract In this paper, ternary solid complexes of Tb-benzioc acid-1,10-phenanthroline have been synthesized. Compared with binary complexes of Tb-benzioc acid, their properties were investigated. The results showed that the second ligand-phenanthroline enhanced the fluorescence intensities of Tb3+, and shortened its fluorescence lifetime, and it was found that the aggregative state influenced the luminescence properties of ternary complexes. When particulates dispersed to a certain degree, the probability of 5D4→7F5 transition of Tb3+ was great, so, green fluorescence was observed for the complexes. With the aggregation of particles, the probability of 5D4→7F5 transition of Tb3+ decreased, while the probability of 5D4→7F3 transition increased. Therefore, ternary complexes of Tb-benzoic acid-1,10-phenanthroline eｘhibited yellow fluorescence. In addition, spectroscopic properties of the complexes were investigated.
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Received: 2002-08-20
Accepted: 2002-12-28
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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,YAO Guang-qing, et al. Study on the Transition of Green，Yellow Fluorescence of Ternary Complexes of Tb-Benzoic Acid-1,10-Phenanthroline [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(06): 708-712.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I06/708 |
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