物理化学学报 >> 2000, Vol. 16 >> Issue (10): 873-878.doi: 10.3866/PKU.WHXB20001003

研究论文 上一篇    下一篇

Ca2+、La3+及Eu3+对NaDC胶团的作用

孙颖, 杨展澜, 张莉, 翁诗甫, 吴瑾光   

  1. 北京大学化学与分子工程学院|北京大学-香港大学稀土材料和生物无机化学联合实验室,北京 100871
  • 收稿日期:1999-12-11 修回日期:2000-03-07 发布日期:2000-10-15
  • 通讯作者: 吴瑾光

Interaction of Ca2+、La3+ and Eu3+ with NaDC Micelle

Sun Ying, Yang Zhan-Lan, Zhang Li, Weng Shi-Fu, Wu Jin-Guang   

  1. Colledge of Chemistry and Molecular Engineering,Peking University-The University of Hong Kong Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry,Peking University,Beijing 100871,China
  • Received:1999-12-11 Revised:2000-03-07 Published:2000-10-15
  • Contact: Wu Jin-Guang

摘要:

在水溶液中将脱氧胆酸钠( NaDC)分别与 CaCl2、 EuCl3及 LaCl3反应,改变反应物浓度和配比,合成了系列脱氧胆酸络合物 .利用红外光谱( FTIR)、元素分析、 ICP分析及 X射线粉末衍射谱,对它们的组成和结构进行了研究 .结果表明:水溶液中 CaCl2与 NaDC的反应不是简单离子间的反应,改变其反应物浓度和配比,生成组成和结构不同的络合物 ;而 LnCl3与 NaDC反应时,反应物浓度和配比的改变不影响产物的组成和结构 .说明虽然 Ln3+与 Ca2+有相似之处,但它们与 NaDC的作用却有很大差别 .

关键词: 脱氧胆酸, 络合物, 胶团, FTIR

Abstract:

The interactions of Ca2+ , La3+ and Eu3+ with NaDC were investigated by FTIR spectroscopy, element analysis and ICP analysis separately. The following conclusions have been deduced: (1) The structure and composition of resultants vary with the concentration and initial molar ratio of CaCl2 and NaDC. The resultant can be simple Ca(DC)2 complex with the composition of Ca(DC)2• 3H2O or complicated Ca(DC)2- NaDC complex with gel character and macromolecular network structure.(2) The structure and compositon of resultants obtained by reaction of LnCl3 and NaDC with various concentration and initial molar ratio are the same with one another. The resultants are all simple Ln(DC)3 complexes with the composition of Ln(DC)3• 6H2O.(3)Ideal models of the interaction of Ca2+ and Ln3+ with NaDC in vitro. have been suggested. The ability of Ln3+ destroying NaDC micelle is stronger than that of Ca2+ .

Key words: Deoxycholic acid, Deoxycholate complex, Micelle, FTIR spectra