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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 26, Number 10
BKCSDE 26(10)
October 20, 2005 

 
Title
Chiral Separation of Arylalcohols by Capillary Electrophoresis Using Sulfonated β-Cyclodextrin and Ag Colloids as Additives
Author
Seong-Ho Choi*, Hyen-Ju Noh, Kwang-Pill Lee
Keywords
Capillary electrophoresis, Ag colloid, γ-Irradiation, Sulfonated β-cyclodextrin
Abstract
Chiral separation of arylalcohols such as 1-phenyl-1-propanol, 1-phenyl-2-propanol, and 2-phenyl-1-propanol by capillary electrophoresis was studied using sulfonated β-cyclodextrin (CD) as a chiral selector and Ag colloids as an additive. The optimum separation condition of arylalcohols was found to be the chiral selector concentration of 6.5 mM, applied voltage of 15 kV, and pH of 7.0. In order to improve chiral separation, an Ag colloid was mixed with a running buffer. The resolution in the Ag colloid-mixed running buffer was considerably superior to that obtained with the sulfonated β-CD alone. The molar ratio of sulfonated β-CD to Ag colloid, which is one of critical parameters affecting resolution, was found to be optimum at 65 : 1. In order to elucidate the resolution mechanism, an inclusion-complex of the arylalcohols with sulfonated β-CD was prepared by mixing and shaking in solution, and then characterized by cyclic voltammetry (CV). The inclusion mechanism was also discussed using experimental results.
Page
1549 - 1554
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