期刊
JOURNAL OF SEPARATION SCIENCE
卷 29, 期 10, 页码 1470-1475出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.200600102
关键词
amino acids; dipeptides; dynamical coating; ligand-exchange; monolithic column
The preparation and application of dynamically coated ligand-exchange chromatography phases for enantioseparation is described. The phases were prepared by pumping a solution of N-decyl-L-4-hydroxyproline, N-hexadecyl-L-4-hydroxyproline, or N-2-hydroxydodecyl-L-4-hydroxyproline through a commercially available monolithic RP-18 column. These coatings are stable against desorption for months at ambient temperature when aqueous mobile phases are used. The columns were applied to the chiral separation of amino acids, glycyl dipeptides and diastereomeric dipeptides, and tripeptides. The chiral selector can be removed or changed easily by washing the column with ACN or methanol. Ultrafast separations in the range of seconds were achieved using high flow rates.
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