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Citation: LIU Xiaoge, WNAG Hongyan, YANG Guangyun, MAO Pu, HE Lijun, XIAO Yongmei, QU Lingbo. Preparation and Evaluation of Carbamate Functionalized Ionic Liquid Stationary for High-performance Liquid Chromatography[J]. Chinese Journal of Applied Chemistry, ;2013, 30(6): 710-715. doi: 10.3724/SP.J.1095.2013.30188 shu

Preparation and Evaluation of Carbamate Functionalized Ionic Liquid Stationary for High-performance Liquid Chromatography

School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China

Received Date: 15 April 2013
Revised Date: 20 April 2013

A new carbamate functionalized ionic liquid stationary phase(ImPh-Carb-Silica) for highperformance liquid chromatography was prepared by bonding 4,4'-diphenylmethylene-bis[2-(1-imidazolyl)-3phenyl-1-propanol carbamate] (ImPh-Carb) onto silica particles. The structure of ImPh-Carb was characterized by ¹H NMR,¹³C NMR,MS and FTIR,and the bonded stationary phase was also characterized by FTIR and element analysis,and the bonding amount of ImPh-Carb-Silica stationary phase was about 0.19 mmol/g,according to the nitrogen content. The chromatographic performances of the stationary phase were evaluated using aromatic hydrocarbons,phenols and organophosphorus pesticides as solutes in reversedphase and normal-phase chromatographic modes,and the effect of the content of mobile phase on retention factor(lg k) of analytes was studied. The results show that the functionalized ionic liquid stationary phase provides a multiple-interaction mechanism with analytes including hydrophobic,hydrogen bonding,π-π,and dipole-induce/dipole interactions. The stationary phase can be simultaneously performed in reversed-phase and normal-phase chromatographic modes,and it demonstrates its superiority in separation of phenols and organophosphorus pesticides under normal-phase chromatographic mode.
- carbamate functionalized ionic liquid,
- stationary phase,
- high-performance liquid chromatography,
- multiple-interaction mechanism
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