稀土长链配合物的合成及其性质研究

通过筛选配体、优化合成条件,设计合成了以Tb3 为中心离子,以苯甲酸、水杨酸、对羟基苯甲酸、对甲基苯甲酸、大茴香酸、间氯苯甲酸、对氨基苯甲酸、磺基水杨酸为第一配体,以十一烯酸为第二配体合成8种铽三元荧光配合物。通过红外光谱分析、紫外光谱分析、元素分析、EDTA配位滴定分析以及电导率的测定确定了铽三元荧光配合物的分子结构和组成,采用热分析仪研究了铽三元荧光配合物的热稳定性能,其热稳定性强弱顺序为:Tb(SSA)(UA).3H2O磺基水杨酸>大茴香酸>对氨基苯甲酸>苯甲酸>水杨酸>对羟基苯甲酸>间氯苯甲酸,同时对产生上述现象的原因进行了初步的理论探讨。

Synthesis of Long-chain Ligand Rare Earth Complexes and Investigation on Their Properties

Through selecting optimum ligand and synthetic conditions,a series of new ternary complexes of terbium with aromatic carboxylic acid as the first ligand and undecenoic acid as the second ligand were synthesized.Their molecular compositions and structures were characterized and confirmed by FT-IR,UV spectroscopy,elemental analysis,EDTA titrimetric analysis and conductance analysis.The thermal stabilities of the terbium ternary complexes were studied by thermal analyzer and their luminescent properties were investigated by fluorescence spectrometer.The results showed that all of the terbium ternary complexes emitted characteristic green fluorescence light.The mechanism for the above phenomenon was discussed.