Published: Journal of Chromatographic Science, Volume 36, Number 8, August 1998, pp. 383-387.
High Performance Liquid Chromatography
on Calixarene-Bonded Silica Gels. II. Separations of Regio- and
Stereoisomers on p-tert-Butylcalix[n]arene
Phases
Sabine Gebauer, Sieglinde Friebe, Gerald Gübitz, and
Gerd-Joachim Krauss
The chromatographic behavior of new calix[n]arene-bonded (n = 4, 6, 8) silica gels are described. Cavities of different size and shape are formed depending on the number of aromatic moieties. The differences in ring size are utilized to investigate chromatographic selectivities towards analytes of various substance classes, including disubstituted aromatics, uracil derivatives, and estradiol epimers. Our results indicate that these calixarene-bonded phases show a high resolution power for regio- and stereoisomers.
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