摘要: 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).