writer：Yan Changhao，Guo Chunfang，Lu Ping，Zhang Ming，Qiu Guanming
keywords：rare earth complex，eseuropium，lanthanum，fluorescence
source：期刊
specific source：Journal of Rare Earths
Issue time：2007年
Rare earth (Eu³⁺) single nuclear chelated with α-methacrylic acid and 1, 10-phenanthroline, as well as the heteronuclear chelated of Eu³⁺ and La³⁺ ions, were synthesized. The composition and structure of the rare earth complexes were confirmed by IR, SEM and XRD. The thermal analysis indicated that the heat-stability was improved. Moreover, the fluorescence spectra proved that the complexes had good fluorescence property. The results showed that it was convenient to synthesize series of europium chelate. The complexes exhibited characteristic fluorescence of europium. ion. The sensitization of La³⁺ could enhance the fluorescence emission intensity of Eu³⁺ ion.