| 二氧化硅包覆稀土配合物Eu(TTA)3phen制备及其荧光性能研究 |
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| 作者姓名： | Tao DL Cui YM Qiao R Xu YZ Wu JG |
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| 作者单位： | 1. 阜阳师范学院化学化工学院,安徽,阜阳,236041
2. 稀土材料化学及应用国家重点实验室,北京100871;北京大学化学与分子工程学院,北京100871 |
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| 基金项目： | 国家自然科学基金项目,安徽省科技计划项目,安徽高校省级自然科学研究重点项目,阜阳师范学院自然科学基金会项目,安徽高等学校省级优秀青年人才基金项目 |
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| 摘 要： | 将稀土配合物Eu(TTA)3phen分散于异丙醇中,通过水解正硅酸乙酯(TEOS)的方法制备了新型荧光材料二氧化硅包覆稀土配合物SiO2/Eu(TTA)3phen.荧光光谱表明二氧化硅包覆后的稀土配合物荧光强度增加了将近一倍,同时,发现Eu3+在617.4 nm附近的发射峰变得非常尖锐,而未经二氧化硅包覆的Eu(TTA)3phen在617.4 nm附近只是非常不明显的肩峰.这说明了二氧化硅包覆稀土配合物后,Eu(TTA)3phen的结构变得更加刚性化,从而使得荧光强度增强.荧光寿命实验结果表明二氧化硅包覆后的稀土配合物寿命减少,这正是由于稀土配合物分子结构刚性化造成的.
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| 关 键 词： | 稀土配合物 二氧化硅 荧光增强 包覆 荧光寿命 |
Synthesis of SiO2 coated Eu(TTA)3phen and study on its fluorescent property |
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| Tao DL,Cui YM,Qiao R,Xu YZ,Wu JG.Synthesis of SiO2 coated Eu(TTA)3phen and study on its fluorescent property[J].Spectroscopy and Spectral Analysis,2011,31(3):723-726. |
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| Authors: | Tao Dong-liang Cui Yu-min Qiao Rui Xu Yi-zhuang Wu Jin-guan |
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| Institution: | College of Chemistry and Chemical Industry, Fuyang Teacher's College, Fuyang 236041, China. |
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| Abstract: | New-style fluorescent material of SiO2/Eu(TTA)3 phen was synthesized by the method of dispersing Eu(TTA)3 phen in isopropanol and hydrolyzing TEOS. Fluorescence spectra showed that the emission intensities of SiO2/Eu(TTA)3 phen were much more stronger than that of Eu(TTA)3 phen by more than two times. At the same time, the peak at 617.4 nm became very sharp, which could not be observed for Eu(TTA)3 phen. This indicated that the structure of Eu(TTA)3 phen became more rigid after coated by SiO2. Thus, the emission intensity was enhanced largely. Life-time of SiOz/Eu(TTA)3 phen decreasing just confirmed the rigidity of SiO2/Eu(TTA)3 phen. |
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