Abstract
A glucaminium-based ionic liquid stationary phase was prepared via facile epoxy-amine reaction and subsequent quaternization. Successful immobilization of glucaminium-based ionic liquid onto silica surface was validated by elemental analysis and infrared spectroscopy. The new stationary phase was evaluated for the separation of nucleosides in hydrophilic interaction liquid chromatography (HILIC). Effects of various factors, such as acetonitrile concentration, salt concentration, pH value, as well as column temperature, on the chromatographic behavior toward nucleosides were studied in detail. The results indicated that this new stationary phase can be used for separation of water-soluble polar substances in HILIC mode. The retention of solutes on the stationary phase was influenced by a mixed-mode retention mechanism with a combination of adsorptive and partitioning interactions.
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The authors express their thanks to the support of the “Hundred Talents Program” of Chinese Academy of Sciences, and the National Natural Science Foundation of China (No. 21475142).
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Jiang, Q., Zhang, M., Wang, X. et al. Glucaminium ionic liquid-functionalized stationary phase for the separation of nucleosides in hydrophilic interaction chromatography. Anal Bioanal Chem 407, 7667–7672 (2015). https://doi.org/10.1007/s00216-015-8927-4
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DOI: https://doi.org/10.1007/s00216-015-8927-4