π-Selective stationary phases: (III) Influence of the propyl phenyl ligand density on the aromatic and methylene selectivity of aromatic compounds in reversed phase liquid chromatography

Stevenson, Paul G., Soliven, Arianne, Dennis, Gary R., Gritti, Fabrice, Guiochon, Georges and Shalliker, R. Andrew 2010, π-Selective stationary phases: (III) Influence of the propyl phenyl ligand density on the aromatic and methylene selectivity of aromatic compounds in reversed phase liquid chromatography, Journal of chromatography A, vol. 1217, no. 33, pp. 5377-5383.

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Title π-Selective stationary phases: (III) Influence of the propyl phenyl ligand density on the aromatic and methylene selectivity of aromatic compounds in reversed phase liquid chromatography
Author(s) Stevenson, Paul G.
Soliven, Arianne
Dennis, Gary R.
Gritti, Fabrice
Guiochon, Georges
Shalliker, R. Andrew
Journal name Journal of chromatography A
Volume number 1217
Issue number 33
Start page 5377
End page 5383
Total pages 7
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2010-08-13
ISSN 0021-9673
1873-3778
Keyword(s) ligand density
N-Alkylbenzene
PAHs
phenyl type stationary phase
selectivity
Summary The retention characteristics of phenyl type stationary phases for reversed phase high performance liquid chromatography are still largely unknown. This paper explores the retention process of these types of stationary phases by examining the retention behaviour of linear PAHs and n-alkylbenzenes on a series of propyl phenyl stationary phases that have changes in their ligand density (1.23, 1.31, 1.97, 2.50 μmol m−2). The aromatic and methylene selectivities increased with increasing ligand density until a point where a plateau was observed, overall the propyl phenyl phases had a higher degree of aromatic selectivity than methylene selectivity indicating that these columns are suitable for separations involving aromatic compounds. Also, retention characteristics relating to the size of the solute molecule were observed to be influenced by the ligand density. It is likely that the changing retention characteristics are caused by the different topologies of the stationary phases at different ligand densities. At high ligand densities, the partition coefficient became constant.
Language eng
Field of Research 030108 Separation Science
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047995

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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