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Single-walled carbon nanotubes for improved enantioseparations on a chiral ionic liquid stationary phase in GC

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Abstract

In order to investigate whether the use of single-walled carbon nanotubes can improve enantioseparations on an ionic liquid stationary phase, a chiral ionic liquid, (R)-N,N,N-trimethyl-2-aminobutanol-bis(trifluoromethanesulfon)imidate, was synthesized. Two capillary columns, one containing the chiral ionic liquid and the other containing the single-walled carbon nanotubes and the chiral ionic liquid, were then prepared for GC. The results of the separations achieved with these columns show that coating the chiral ionic liquid stationary phase onto the capillary column containing single-walled carbon nanotubes improves the enantioselectivety of the chiral ionic liquid. This work indicates that using single-walled carbon nanotubes in this manner enables the application range of such GC chiral separations to be extended.

Chromatograms of (±)-phenylethanol racemates on a chiral ionic liquid column (a) and a column containing SWNTs and the chiral ionic liquid (b)

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Fig. 1
Fig. 2 A–B
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Acknowledgements

This work was supported by the National Natural Science Foundation (grant no. 20775066) of China.

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Authors and Affiliations

  1. Department of Chemistry, Yunnan Normal University, Kunming, 650092, China

    Li Zhao, Ping Ai, Ai-Hong Duan & Li-Ming Yuan

  2. Centre for Disease Control and Prevention, Kunming, 650228, China

    Li Zhao

Authors
  1. Li Zhao
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  2. Ping Ai
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  3. Ai-Hong Duan
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  4. Li-Ming Yuan
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Corresponding author

Correspondence to Li-Ming Yuan.

Additional information

Published in the special issue Nanomaterials for Improved Analytical Processes with guest editors Miguel Valcárcel and Bartolomé M. Simonet.

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Zhao, L., Ai, P., Duan, AH. et al. Single-walled carbon nanotubes for improved enantioseparations on a chiral ionic liquid stationary phase in GC. Anal Bioanal Chem 399, 143–147 (2011). https://doi.org/10.1007/s00216-010-4079-8

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  • DOI: https://doi.org/10.1007/s00216-010-4079-8

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