高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

铕-铽-钆-六氟乙酰丙酮三元配合物的合成与温敏发光性质

张雁1, 赵钰1, 李叶根1, 盛夏1, 胡全2, 钱国栋1   

    1. 浙江大学材料科学与工程系, 硅材料国家重点实验室, 杭州 310027;
    2. 杭州师范学院药理教研室, 杭州 310018
  • 收稿日期:2006-04-11 修回日期:1900-01-01 出版日期:2006-11-10 发布日期:2006-11-10
  • 通讯作者: 钱国栋

Synthesis and Temperature Sensitized Photoluminescence Property of Eu(Ⅲ)-Tb(Ⅲ)-Gd(Ⅲ) Hexafluoroacetylacetone Ternary Complex with Triphenylphosphine Oxide

ZHANG Yan1, ZHAO Yu1, LI Ye-Gen1, SHENG Xia1, HU Quan2, QIAN Guo-Dong1   

    1. State Key Lab of Silica Materials, Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, China;
    2. Department of Pharmacology, Hangzhou Teachers College, Hangzhou 310018, China
  • Received:2006-04-11 Revised:1900-01-01 Online:2006-11-10 Published:2006-11-10

PDF (PC)

被引次数

4

摘要： 合成了铕-铽-钆-六氟乙酰丙酮(HFA)三元配合物Eu0.4Tb0.4Gd0.2(HFA)3(TPPO)2(TPPO: 三苯基氧化磷), 其组成和结构经元素分析和红外吸收光谱确认; 研究了三元配合物的发光性能, 以及铽、钆离子对铕离子发光性能的影响. 结果表明, 配合物中存在着声子支助的Tb3+→Eu3+的能量转移, 增强了Eu3+离子的室温特征荧光发射, 且样品的发光颜色随温度的改变而变化, 具有温敏特性.

关键词: 稀土, 三元配合物, 温敏发光, 声子支助能量转移

Abstract:

Ternary lanthanide hexafluoroacetylacetonate complex with triphenylphoshine oxide, Eu0.4Tb0.4Gd0.2(HFA)3(TPPO)2(HFA=hexafluoroacetylacetonate, TPPO=triphenylphoshine oxide), was synthesized and identified by elemental analysis and FTIR. The photoluminescence(PL) spectra were measured and the characteristic transitions of Eu3+ and Tb3+ were observed. Temperature dependent PL properties of the ternary complex were also studied as well as the influences of Tb3+ and Gd3+ ions on PL properties of Eu3+ ions. As a result, the phonon assisted energy transfer from Tb3+ ions to Eu3+ ions, which enhanced the characteristic fluorescence intensity of Eu3+ ions at room temperature, was observed, and the sample exhibits different luminescent colors at different temperatures. The decay curves from the 5D0 level of europium ions were measured at various temperatures and the lifetimes were obtained from fitting the data. It is seen that the lifetime decreases with increase in temperature. The complex is promising for being used as temperature detector and thermal-sensitive probe.

Key words: Rare earth, Ternary complex, Temperature-sensitized photoluminescence, Phonon assisted energy transfer

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