Summary
Dimethylated-β-cyclodextrins dynamically adsorbed on porous graphitic carbon have been used as chiral selectors in chiral supercritical-(or subcritical-) fluid chromatography. The kinetics of adsorption and desorption were studied with CO2-methanol+dimethylated-β-cyclodextrins and CO2-methanol as mobile phases. The system was proved to be stable and reproducible and to afford rapid enantiomer separations especially when performed with 95:5 CO2-methanol+dimethylated-β-cyclodextrin as mobile phase. The versatility of the chiral system enabled the use of a variety of chiral selectors. It was found that enantiomer separation can vary largely as a function of the composition of commercial dimethylated-β-cyclodextrin mixture.
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Salvador, A., Herbreteau, B. & Dreux, M. Preliminary studies of supercritical-fluid chromatography on porous graphitic carbon with methylated cyclodextrin as chiral selector. Chromatographia 53, 207–209 (2000). https://doi.org/10.1007/BF02491572
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DOI: https://doi.org/10.1007/BF02491572