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

Chem. J. Chinese Universities

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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

Abstract

Abstract:

Ternary lanthanide hexafluoroacetylacetonate complex with triphenylphoshine oxide, Eu_0.4Tb_0.4Gd_0.2(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

CLC Number:

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ZHANG Yan¹, ZHAO Yu¹, LI Ye-Gen¹, SHENG Xia¹, HU Quan², QIAN Guo-Dong¹. Synthesis and Temperature Sensitized Photoluminescence Property of Eu(Ⅲ)-Tb(Ⅲ)-Gd(Ⅲ) Hexafluoroacetylacetone Ternary Complex with Triphenylphosphine Oxide[J]. Chem. J. Chinese Universities, doi: .

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

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