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合成一系列关于Eu(Ⅲ)/Gd(Ⅲ)与2-噻酚甲酰三氟丙酮(HTTA)、苯甲酸(BA)和邻菲罗啉(Phen)的配合物,并对这配合物进行元素、红外与荧光光谱分析.结果表明:这些配合物的组成为Eu_(1-x)Gd_x(BA)- (TTA)_2Phen(x=0~1),配合物Eu(BA)(TTA)_2Phen比配合物Eu(TTA)_3Phen具有更宽的激发带,且激发带发生明显的蓝移,说明新的配合物已经生成,共发光Gd3~+离子对配合物Eu_(1-x)Gd_x(BA)(TTA)_2Phen的荧光增强非常明显,最佳Gd~(3+)离子浓度为0.4(摩尔分数).配合物Eu_(1-x)Gd_x(BA)(TTA)_2Phen荧光增强的主要机理是Eu(BA)(TTA)_2Phen与Gd(BA)(TTA)_2Phen配合物分子间的能量传递.
A series of complexes of Eu (Ⅲ) / Gd (Ⅲ) with 2-thiophenoxytrifluoroacetone (HTTA), benzoic acid (BA) and phenanthroline were synthesized and this complex was Elemental, Infrared and Fluorescence Spectra. The results show that the composition of Eu (BA) (TTA) _2Phen is Eu_ (1-x) Gd_x (BA) - (TTA) _2Phen (x = 0 ~ 1) With a wider excitation band and a clear blue shift of the excitation band, indicating that a new complex has been formed. The fluorescence of the complex Eu_ (1-x) Gd_x (BA) (TTA) _2Phen is enhanced by the co- Obviously, the best Gd 3+ ion concentration is 0.4 (mole fraction). The main mechanism of the fluorescence enhancement of the complex Eu_ (1-x) Gd_x (BA) (TTA) _2Phen is the energy transfer between Eu (BA) (TTA) _2Phen and Gd (BA) (TTA) _2Phen complexes.