Abstract
Poly-vinyloctylimidazolium ionic liquid polymers with different counter ions (bromide, hexafluorophosphate and bis-trifluoromethanesulfonylimide) were directly coated in capillary fused silica tubing as the stationary phases for gas chromatography. The anion effects on the polymers were examined and discussed. The results suggest that the poly-vinyloctylimidazolium, bis-trifluoromethanesulfonylimide capillary column has the highest thermal stability and separation efficiency. Column-to-column reproducibility was also studied. The results indicate that anions significantly influence ionic liquid polymers which give them potential to extend the range of options for the stationary phases in gas chromatography.
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Acknowledgement
The authors are grateful to Professors Hui-Lien Tsai and Hua-Fen Hsu for their generous assistance, and the National Science Council for financial support (NSC. 95-2113-M-006-018).
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Hsieh, YN., Ho, WY., Horng, R.S. et al. Study of Anion Effects on Separation Phenomenon for the Vinyloctylimidazolium Based Ionic Liquid Polymer Stationary Phases in GC. Chroma 66, 607–611 (2007). https://doi.org/10.1365/s10337-007-0334-3
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DOI: https://doi.org/10.1365/s10337-007-0334-3