光子学报, 2010, 39 (5): 802, 网络出版: 2010-07-05
Eu(TTFA)3掺杂SiO2杂化胶体球的合成及特性
Synthesis and Properties of Eu(TTFA)3-doped SiO2 Hybrid Spheres
SiO2杂化胶体球 碱催化法 种子法 光谱特性 SiO2 hybrid spheres Eu(TTFA)3 Eu(TTFA)3 Base-catalyzed method Seed-growth method Fluorescence properties
摘要
采用改进的碱催化法和种子法分别制得了稀土配合物Eu(TTFA)3掺杂的SiO2杂化胶体球，并用透射电子显微镜和荧光分光光度计对其显微形貌和荧光光谱特性进行了详细地研究.结果表明，两种方法都可以获得单分散性的、稀土配合物掺杂SiO2杂化胶体球，且都具有Eu3+离子典型的荧光光谱特性.Eu(TTFA)3掺杂入SiO2胶体球中后，有机配体TTFA在短波长处的吸收明显增强了，最大的吸收峰位也向短波长方向移动大约20～30 nm，Eu3+离子5D0→7F2发射跃迁仍然具有良好的窄线发光特征，同时荧光峰值的形态和位置受SiO2基体的影响发生轻微的变化.
Abstract
Eu(TTFA)3-doped SiO2 hybrid spheres are synthesized by the modified St?ber method and seed growth method,and characterized by the transmission electron microscope and fluorescence spectrometer.The results show that SiO2 hybrid spheres doped wih Eu(TTFA)3 synthesized by both the two methods have smooth surface and good monodispersity and exhibit the characteristic photoluminescence of the Eu3+ ions.After Eu(TTFA)3 doped into SiO2 spheres,the absorption intensities of the ligand TTFA obviously increase in the short wavelength range and its maxium accordingly shifts about 20 or 30 nm to shorter wavelength.Under the influence of SiO2 matrix,5D0→7F2 transition of Eu3+ ions doped into SiO2 spheres still appears to be narrow and its fluorescent peaks slightly change.
黄昌清, 田维坚, 冯桂兰, 陈慧芳. Eu(TTFA)3掺杂SiO2杂化胶体球的合成及特性[J]. 光子学报, 2010, 39(5): 802. HUANG Chang-qing, TIAN Wei-jian, FENG Gui-lan, CHEN Hui-fang. Synthesis and Properties of Eu(TTFA)3-doped SiO2 Hybrid Spheres[J]. ACTA PHOTONICA SINICA, 2010, 39(5): 802.
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