Study on Fluorescence Spectroscopy of Terbium(Ⅲ) Complexes with DTPAA Anhydride and pAS-Na in Aqueous Solution

Abstract

Abstract: The Tb³⁺ mixed ligand complex was prepared using Tb³⁺, DTPAA and pAS-Na in aqueous solution, and its existence was proved by UV and fluorescence spectra. The influence of concentration, pH value and La³⁺ on fluorescence emission strength of the complex was studied. The reaction of DTPAA with pAS-Na can give DTPA-pAS and DTPA-2pAS. Their Tb³⁺ complexes were obtained via the reactions of Tb³⁺ with DTPA-pAS and DTPA-2pAS in aqueous solution, respectively. The fluorescence properties of the Tb³⁺ complexes were studied. The possibility for application of the Tb³⁺ mixed ligand complex in labeling for human serum albumin(HSA) is tested.

Key words: terbium, complex, fluorescence

摘要： 用TbCl₃，二乙三胺五乙酸二酸酐(简写为DTPAA)和对-氨基水杨酸的钠盐(简写为pAS-Na)在水溶液中制得Tb³⁺的三元配合物，通过紫外可见光谱和荧光光谱验证了此三元配合物的存在；用DTPAA与pAS-Na制得的含氮多羧基配体DTPA-pAS和DTPA-2pAS分别与TbCl₃溶液制得了2种二元配合物。研究了此3种配合物在水溶液中的荧光性质，考察了浓度、pH值、La³⁺离子等对三元配合物荧光性质的影响，并且探索了用三元配合物作为荧光免疫标记示踪物的可能性。

关键词: 铽, 配合物, 荧光

CLC Number:

O611.6

ZHANG Yuanjing,LIU Qinde,WANG Xiaogang,CHEN Yu,LIU Hui,LI Junran. Study on Fluorescence Spectroscopy of Terbium(Ⅲ) Complexes with DTPAA Anhydride and pAS-Na in Aqueous Solution[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

张元静,刘沁德,王晓岗,陈雨,刘辉,李俊然. Tb(Ⅲ)与DTPAA，pAS-Na的配合物在水溶液中荧光性质的研究[J]. 北京大学学报（自然科学版）.

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URL: https://xbna.pku.edu.cn/EN/

https://xbna.pku.edu.cn/EN/Y2000/V36/I6/741

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Study on Fluorescence Spectroscopy of Terbium(Ⅲ) Complexes with DTPAA Anhydride and pAS-Na in Aqueous Solution

Tb(Ⅲ)与DTPAA，pAS-Na的配合物在水溶液中荧光性质的研究

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