KINETIC DETERMINATION OF BINDING CONSTANTS FOR CYCLODEXTRIN INCLUSION OF PADA IN SOLUTION

被引：9

作者：

DEMONT, PM ^{[1
]}

REINSBOROUGH, VC ^{[1
]}

机构：

[1] MT ALLISON UNIV, DEPT CHEM, SACKVILLE E0A 3C0, NB, CANADA

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1991年 / 44卷 / 05期

关键词：

D O I：

10.1071/CH9910759

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Competition kinetics was used to determine the binding constants of the dye pyridine-2-azo-p-dimethylaniline (pada) with beta-cyclodextrin (beta-CD), gamma-cyclodextrin (gamma-CD), 2,6-O-dimethyl-beta-cyclodextrin (dm-beta), 2,3,6-O-trimethyl-beta-cyclodextrin (tm-beta) and hydroxypropyl-beta-cyclodextrin (hp-beta) at 25.0-degrees. Stopped-flow spectroscopy was used to monitor the change in kinetics after cyclodextrins had been added to the Ni(aq)2+ and pada reactant solutions. The values of the binding constants/dm3 mol-1 with pada were 300 for beta-CD, 40 for gamma-CD, 550 for dm-beta, 210 for tm-beta, and 350 for hp-beta.

引用

页码：759 / 763

页数：5

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