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Molecules 2016, 21(5), 561; doi:10.3390/molecules21050561

Nanocellulose Derivative/Silica Hybrid Core-Shell Chiral Stationary Phase: Preparation and Enantioseparation Performance

1
Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
2
University of Chinese Academy of Science, Beijing 100039, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Yoshio Okamoto
Received: 24 March 2016 / Revised: 24 April 2016 / Accepted: 25 April 2016 / Published: 4 May 2016
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Abstract

Core-shell silica microspheres with a nanocellulose derivative in the hybrid shell were successfully prepared as a chiral stationary phase by a layer-by-layer self-assembly method. The hybrid shell assembled on the silica core was formed using a surfactant as template by the copolymerization reaction of tetraethyl orthosilicate and the nanocellulose derivative bearing triethoxysilyl and 3,5-dimethylphenyl groups. The resulting nanocellulose hybrid core-shell chiral packing materials (CPMs) were characterized and packed into columns, and their enantioseparation performance was evaluated by high performance liquid chromatography. The results showed that CPMs exhibited uniform surface morphology and core-shell structures. Various types of chiral compounds were efficiently separated under normal and reversed phase mode. Moreover, chloroform and tetrahydrofuran as mobile phase additives could obviously improve the resolution during the chiral separation processes. CPMs still have good chiral separation property when eluted with solvent systems with a high content of tetrahydrofuran and chloroform, which proved the high solvent resistance of this new material. View Full-Text
Keywords: nanocrystalline cellulose; chiral stationary phase; core-shell material; enantioseparation; high performance liquid chromatography nanocrystalline cellulose; chiral stationary phase; core-shell material; enantioseparation; high performance liquid chromatography
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Zhang, X.; Wang, L.; Dong, S.; Zhang, X.; Wu, Q.; Zhao, L.; Shi, Y. Nanocellulose Derivative/Silica Hybrid Core-Shell Chiral Stationary Phase: Preparation and Enantioseparation Performance. Molecules 2016, 21, 561.

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