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A novel sorbent for chromatographic separations: A silica matrix modified with non‐covalently bonded tetrakis(β‐cyclodextrin)–porphyrin conjugates
Author(s) -
Kejík Zdeněk,
Kaplánek Robert,
Rak Jakub,
Plátová Marie,
Vosmanská Magda,
Martásek Pavel,
Král Vladimír
Publication year - 2013
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201300116
Subject(s) - triphenylene , chemistry , porphyrin , cyclodextrin , covalent bond , alkylbenzenes , sorbent , macromolecule , ethylbenzene , organic chemistry , benzene , combinatorial chemistry , molecule , adsorption , biochemistry
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.