Stationary Phase for Gas Chromatography on the Basis of a Precursor of Macroheterocycles and a Nematic Liquid Crystal
- Autores: Kuvshinova S.1, Novikov I.1, Kuvshinov G.1, Litov K.2, Burmistrov V.1, Islyaikin M.1, Koifman O.1,3
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Afiliações:
- Ivanovo State University of Chemistry and Technology
- Federal State Budgetary Educational Institution of Higher Education
- Krestov Institute of Solution Chemistry
- Edição: Volume 89, Nº 3 (2019)
- Páginas: 574-579
- Seção: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/222827
- DOI: https://doi.org/10.1134/S1070363219030381
- ID: 222827
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Resumo
The stationary phase for gas chromatography on the basis of the chiral R(+)-1′,7′,7′-trimethylbicyclo-[2.2.1]heptano[2′,3′-b]-2,3-dicyanopyrazine (10.4 wt %) and a liquid crystalline 4,4′-dihexyloxyazoxybenzene was studied. The phase transition temperatures of the binary mixture were measured by polarizing microscopy. It was shown that the chiral camphor-substituted 2,3-dicyanopyrazine induces formation of an enantiotropic chiral helically coiled nematic phase in the achiral liquid crystal over a wide temperature range. The gas chromatographic retention times of organic compounds on this sorbents were measured. The structural and chiral selectivity of the stationary phase on the basis of a liquid crystal and camphor-substituted 2,3-dicyanopyrazine was determined. The retention volumes, activity coefficients, and sorption enthalpies and entropies were calculated and analyzed.
Sobre autores
S. Kuvshinova
Ivanovo State University of Chemistry and Technology
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 7, Ivanovo, 153000
I. Novikov
Ivanovo State University of Chemistry and Technology
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 7, Ivanovo, 153000
G. Kuvshinov
Ivanovo State University of Chemistry and Technology
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 7, Ivanovo, 153000
K. Litov
Federal State Budgetary Educational Institution of Higher Education
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 8, Ivanovo, 153012
V. Burmistrov
Ivanovo State University of Chemistry and Technology
Autor responsável pela correspondência
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 7, Ivanovo, 153000
M. Islyaikin
Ivanovo State University of Chemistry and Technology
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 7, Ivanovo, 153000
O. Koifman
Ivanovo State University of Chemistry and Technology; Krestov Institute of Solution Chemistry
Email: burmistrov@isuct.ru
Rússia, pr. Sheremetevskii 7, Ivanovo, 153000; ul. Akademicheskaya 1, Ivanovo, 153040