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

Autor:	Elahe Naghdi, Ali Sharifi, Kourosh Tabar Heydar, Mojtaba Mirzaei, Seyyed Hamid Ahmadi
Rok vydání:	2015
Předmět:	Thermogravimetric analysis Tetrafluoroborate Chemistry General Chemical Engineering General Engineering Analytical chemistry High-performance liquid chromatography Analytical Chemistry Ion Hydrophobic effect chemistry.chemical_compound Elemental analysis Bromide Electrostatic interaction
Zdroj:	Analytical Methods. 7:5074-5080
ISSN:	1759-9679 1759-9660
DOI:	10.1039/c5ay00241a
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e53f50b79c42689b236fa517239c2142 https://doi.org/10.1039/c5ay00241a Zobrazit plný text záznamu