Effects of substituent and solvent on inclusion complexation of β-cyclodextrins with azobenzene derivatives

被引：28
|
作者：
Sueishi, Y [1 ]
Kasahara, M [1 ]
Inoue, M [1 ]
Matsueda, K [1 ]
机构：
[1] Okayama Univ, Fac Sci, Dept Chem, Okayama 7008530, Japan
来源：
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY | 2003年 / 46卷 / 1-2期
关键词：
azoanilinium chlorides; inclusion complexation; solvent effect; substituent effect; surface tension;
D O I：
10.1023/A:1025686605714
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The equilibrium constants (K) for the inclusion complex formation of beta-cyclodextrin (beta-CD) with Methyl Orange (MO) and substituted azoanilinium chlorides were determined spectrophotometrically. Based on the results, the substituent effect on the inclusion complexation of beta-CD with azoanilinium chlorides was discussed in detail. Further, the solvent effects on the inclusion complexation of MO with beta-CD and heptakis(2,6-di-O-methyl)-beta-cyclodextrin (DM-beta-CD) were examined in aqueous organic mixtures with water-miscible organic compounds ( dimethylsulfoxide, acetonitrile, N, N-dimethylformamide, and acetone). It was found that the K value for the inclusion complex formation with beta-CD and DM-beta-CD decreases remarkably with increasing ratio of organic solvents, dependent of the surface tension of solvent mixtures.
引用
收藏
页码：71 / 75
页数：5
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