Capillary electrophoretic study on the interaction between sodium dodecyl sulfate and neutral cyclodextrins

被引：26

作者：

Bendazzoli, Claudia ^{[1
]}

Mileo, Elisabetta ^{[2
]}

Lucarini, Marco ^{[2
]}

Olmo, Stefano ^{[1
]}

Cavrini, Vanni ^{[1
]}

Gotti, Roberto ^{[1
]}

机构：

[1] Univ Bologna, Dept Pharmaceut Sci, I-40126 Bologna, Italy

[2] Univ Bologna, Dept Organ Chem A Mangini, I-40126 Bologna, Italy

来源：

MICROCHIMICA ACTA | 2010年 / 171卷 / 1-2期

关键词：

Critical micelle concentration; Capillary electrophoresis; Cyclodextrins; Electronic paramagnetic resonance; CRITICAL MICELLE CONCENTRATION; ELECTROKINETIC CHROMATOGRAPHY; BETA-CYCLODEXTRIN; INCLUSION COMPLEXES; ALPHA-CYCLODEXTRIN; SURFACTANTS; CONSTANTS; MICELLIZATION; CONDUCTIVITY; ASSOCIATION;

D O I：

10.1007/s00604-010-0403-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The micellization of the ionic surfactant sodium dodecyl sulfate (SDS) has been investigated in the presence of neutral cyclodextrins by means of capillary electrophoresis (CE). The measurements of electric current allowed the determination of the critical micelle concentration of SDS in the presence of alpha-, beta- and gamma-cyclodextrin, and of (2-hydroxypropyl)-beta-cyclodextrin and (2,6-di-O-methyl)-beta-cyclodextrin. Measurements of the CE current also yields information on the binding of SDS by cyclodextrins. The results are supported by electronic paramagnetic resonance spectroscopy and suggest that the methylated cyclodextrin affects the micellization of SDS in an unconventional way compared to other considered cyclodextrins. The combination of SDS with methylated cyclodextrin can have a profound effect on the reliable application of cyclodextrin-modified micellar electrokinetic chromatography.

引用

页码：23 / 31

页数：9

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