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Updated: May 11, 2026

Deposition of Porous Sorbents on Fabric Supports
Published on: June 12, 2018
A novel sorbent for chromatographic separations: a silica matrix modified with non-covalently bonded
Zdeněk Kejík1, Robert Kaplánek, Jakub Rak
1Department of Analytical Chemistry, Faculty of Chemical Engineering, Institute of Chemical Technology, Prague, Czech Republic.
Abstract:
We prepared new phases for LC that consisted of silica modified with non-covalently bonded tetrakis(β-cyclodextrin)-porphyrin (where cyclodextrin is CD) conjugates. The effects of the porphyrin core, type of spacer and β-CD moieties on the behaviours of the modified phases for the separation of aromatic compounds (benzene, toluene, ethylbenzene, propylbenzene, butylbenzene, pentylbenzene, o-terphenyl, triphenylene, phenol and caffeine) and fluorinated aromatic compounds (pentafluorobenzonitrile, pentafluoronitrobenzene and hexafluorobenzene) were studied using the Tanaka test. The results indicate that the non-covalent substitution of silica with CD-based macromolecules that have a porphyrin core can be a very effective method for preparing novel sorbents with specific chromatographic properties for applications in LC.
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