中文摘要：

采用共沉淀法合成Tb-La混配的邻苯二甲酸-1,10-菲咯啉二元、三元配合物,经元素分析及红外光谱确定,该系列配合物的组成为Tb（Ⅲ）xLa（Ⅲ）2-xL3·2H2O 和Tb（Ⅲ）xLa（Ⅲ） 2-x L3·phen·2H2O（L-邻苯二甲酸根,phen-1,10-菲咯啉）.荧光光谱测试发现,在Tb-La 混配二元配合物中,随着Tb（Ⅲ）含量的降低,Tb的发射峰由强变弱,而在Tb-La混配三元配合物中,Tb的发射峰却明显增强,其原因可用分子内能量传递过程不同来解释.在二元配合物中能量主要被邻苯二甲酸吸收,且其激发三重态能级与Tb（Ⅲ）发射能级匹配较好,能将能量有效地传递给Tb,使 Tb的发光增强,所以当配合物中的Tb（Ⅲ）含量降低,其发光强度也随之减弱,La作为混配离子对Tb未起到敏化作用;在三元配合物中,能量主要由1,10-菲咯啉吸收,因其激发三重态能级不能与Tb能级有效匹配,能量只能经La（Ⅲ）有效传递给Tb（Ⅲ）,从而使Tb的荧光增强,此时La起到了敏化作用.

英文摘要：

The rare earth complexes of Tb（Ⅲ） with o-phthalic acid and 1,10-Phenanthroline doped with La （Ⅲ） have been synthesized. Confirming composition of this series cooperation complexes are TbxLa2-xL3·2H2O and TbxLa2-xL3· phen·2H2O （L-o-phthalic acid, phen-1,10-Phenanthroline） by elemental analysis and IR. By investigating the fluorescence spectra,it is found that the fluorescence intensities decreased when the quality of terbium is declined among the binary complex of Tb-La co-doped,but the ternary complex of Tb-La, the fluorescence intensities of terbium is enhanced. The main reason is that the energy is absorbed by the phthalic acid in binary complex,and its lowest triplet level of ligand can efficiently transfer the energy to Tb（ Ⅲ）, then terbium give out the fluorescence, so terbium hardly can be sensitized by co-doped La. On the contrary, the second coordination absorbs the main energy in ternary complex, but it can not transfer the energy to terbium efficiently, but to lanthanum firstly and give it to terbium,which now have been sensitized by lanthanum and the fluorescence of is increased clearly.