光谱学与光谱分析, 2011, 31 (3): 723, 网络出版: 2011-08-16
二氧化硅包覆稀土配合物Eu(TTA)3phen制备及其荧光性能研究
Synthesis of SiO2 Coated Eu(TTA)3phen and Study on Its Fluorescent Property
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。
Abstract
New-style fluorescent material of SiO2/Eu(TTA)3phen was synthesized by the mothed of dispersing Eu(TTA)3phen in isopropanol and hydrolyzing TEOS. Fluorescence spectra showed that the emission intensities of SiO2/Eu(TTA)3phen were much more stronger than that of Eu(TTA)3phen 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)3phen. This indicated that the structure of Eu(TTA)3phen became more rigid after coated by SiO2. Thus, the emission intensity was enhanced largely. Life-time of SiO2/Eu(TTA)3phen decreasing just confirmed the rigidity of SiO2/Eu(TTA)3phen.
陶栋梁, 崔玉民, 乔瑞, 徐怡庄, 吴瑾光. 二氧化硅包覆稀土配合物Eu(TTA)3phen制备及其荧光性能研究[J]. 光谱学与光谱分析, 2011, 31(3): 723. TAO Dong-liang, CUI Yu-min, QIAO Rui, XU Yi-zhuang, WU Jin-guang. Synthesis of SiO2 Coated Eu(TTA)3phen and Study on Its Fluorescent Property[J]. Spectroscopy and Spectral Analysis, 2011, 31(3): 723.