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Issue 12, 2015

Preparation and evaluation of silica-based N-octylimidazolium stationary phases for HPLC

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Abstract

In this study, a new silica-based N-octylimidazolium bromide stationary phase, SilprOIm Br, has been synthesized, and then the stationary phase's anion has been converted to tetrafluoroborate to provide a new silica-based N-octylimidazolium tetrafluoroborate stationary phase, SilprOIm BF4. The modified particles were characterized by thermogravimetric analysis (TGA) and elemental analysis. Columns were packed with stationary phases. They were tested under HPLC conditions. The new phases indicated multiple retention mechanisms, such as anion-exchange, hydrophobic interaction, electrostatic interaction and π–π interaction, which may lead to more universally applicable separation media. Furthermore, the effect of the stationary phase's anion on the separation of compounds has been investigated.

Graphical abstract: Preparation and evaluation of silica-based N-octylimidazolium stationary phases for HPLC

Article information


Submitted
27 Jan 2015
Accepted
02 May 2015
First published
27 May 2015

Anal. Methods, 2015,7, 5074-5080
Article type
Paper

Preparation and evaluation of silica-based N-octylimidazolium stationary phases for HPLC

K. Tabar Heydar, E. Naghdi, A. Sharifi, M. Mirzaei and S. H. Ahmadi, Anal. Methods, 2015, 7, 5074 DOI: 10.1039/C5AY00241A

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