Novel sulfonic acid-modified starburst dendrimer used as a pseudostationary phase in electrokinetic chromatography

Starburst dendrimer macromolecules modified with sulfonic acid terminal moieties were used as a pseudostationary phase in electrokinetic chromatography to separate positional isomers of neutral phenol molecules in an aqueous mobile phase by capillary electrophoresis. Using these dendrimers optimal s...

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Bibliographic Details
Published inJournal of Chromatography A Vol. 824; no. 1; pp. 119 - 124
Main Authors Gray, Ann L, Hsu, James T
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 16.10.1998
Elsevier
Subjects
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Dendrimers
Exact sciences and technology
Other chromatographic methods
Phenols
Starburst dendrimers
Phenols
Dendrimers
Pesudostationary phase
Starburst dendrimers
Separation
Phase composition
Branched polymer
Xylenols
Capillary electrophoresis
Pseudostationary phase
Micellar electrokinetic capillary chromatography
Experimental study
Mobile phase
Polyelectrolyte
Sulfonate polymer
Ultraviolet detector
Position isomer
pH
Dendritic structure
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Summary:Starburst dendrimer macromolecules modified with sulfonic acid terminal moieties were used as a pseudostationary phase in electrokinetic chromatography to separate positional isomers of neutral phenol molecules in an aqueous mobile phase by capillary electrophoresis. Using these dendrimers optimal separation was achieved at a pH below the p K a values of the phenols and with better performance than with micellar electrokinetic chromatography using sodium dodecyl sulfate micelles.
ISSN:0021-9673
DOI:10.1016/S0021-9673(98)00623-2