Regularities of the sorption of cycloalkenyl-substituted thiophenes and 2,2′-bithiophenes from water-acetonitrile solutions on hexadecyl silica gel under conditions of high-performance ... View Full Text


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Article Info

DATE

2011-07-08

AUTHORS

N. S. Emel’yanova, S. V. Kurbatova, B. R. Saifutdinov, A. V. Yudashkin

ABSTRACT

Regularities of the sorption of newly synthesized cycloalkenyl-substituted thiophenes and 2,2′-bithiophenes from water-acetonitrile solutions of different compositions on hexadecyl silica gel are investigated by high-performance liquid chromatography (HPLC). The retention factors and Henry constants of adsorption of these substances are determined. We discuss the effect of the molecular structure of the investigated heterocycles, and the nature and positions of the substituents, on the sorption. The equilibrium constants for the quasi-chemical reactions of sorption of the investigated compounds at the interface, and their solvation in a multicomponent bulk solution, are calculated using the Lanin-Nikitin equation. Based on the obtained results, we suggest that structural self-organization in the bulk solution and at the interface with the hydrophobic surface of hexadecyl silica gel plays an important part in the sorption of cycloalkenylsubstituted thiophenes and 2,2′-bithiophenes from multicomponent solutions. More... »

PAGES

1440-1449

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0036024411080103

DOI

http://dx.doi.org/10.1134/s0036024411080103

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1037423075


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