Citation: Wei Guo ZHU, Xiao Qiang WEI, Zhi Yun LU, Qing JIANG, Ming Gui XIE. Synthesis and Fluorescent Properties of New Binuclear Europium β-Diketone Chelates Eu_mY_1-m(TTA)3phen as Red Electroluminescent Materials[J]. Chinese Chemical Letters, ;1999, 10(7): 603-606. shu

Synthesis and Fluorescent Properties of New Binuclear Europium β-Diketone Chelates Eu_mY_1-m(TTA)3phen as Red Electroluminescent Materials

Department of Chemistry, Sichuan University, Chengdu 610064

Received Date: 3 February 1999

Fund Project: Project 29672025 was supported by National Natural Science Foundation of China.

A new type of binuclear europium y-dihetone chelates Eu_mY_1-m (TTA); phen (0≤m≤1) and the influence of the proportion of Y³⁺ on fluorescence intensity of the Lu-complexes were studied. It was found the proportion of Y³⁺ could atlect the fluorescence properties and the film formation seriously. only m≥0.5Y³⁺ could increase the luminescent intensity and improve the film formation. As a result, three new binuclear europiump-dihetone chelates con5fisted of Eu_mY_1-m (TTA)₃ phen (m=0.9. 0.7 and 0.5) were designed and synthesized. Their structures were elucidated by IR. UV. DSC and Eaementary Analysis. Their PL properties were studied. The results showed that the three binuclear europiump-diketone chelates had better PI. properties and film formation than Eu(TTA)₃phen. They could emit sharply red light, and fluorescent wavelength of them was all at 613nm (half bandwidth: lOnm). They can be used as red organic electroluminescent materials (OELMs) in organic electroluminescent devices (GELDS).
- Europium β-diketone chelate,
- synthesis,
- photoluminescence,
- fluorescence properties
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