Abstract
The distribution of a substance between two immiscible phases: a water–dimethylsulfoxide solvent of variable composition and n-hexane is studied. The obtained data are used to determine the distribution coefficients of hydroxypropyl-β-cyclodextrin and to calculate the changes in the Gibbs energy of resolvation. Weakening of the solvation of the macrocycle is observed upon moving from water to aqueous solutions of dimethylsulfoxide. Based on an analysis of the obtained and literature data, it is assumed that changes in the state of solvation of cyclodextrins have the main effect on the change in the stability of complexes of quercetin with hydroxypropyl-β-cyclodextrin and with β-cyclodextrin in water–dimethylsulfoxide solvent.
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Funding
This work was performed at the Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemical Technology, as part of a State Task for scientific research, topic no. FZZW-2020-0009. It was supported by the Russian Foundation for Basic Research and Problems of Atomic Science and Technology as part of scientific project no. 19-53-54004.
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Kuranova, N.N., Usacheva, T.R., Gushchina, A.S. et al. Effect of Water–Dimethylsulfoxide Solvent on the Solvation of Hydroxypropyl-β-cyclodextrine. Russ. J. Phys. Chem. 95, 1821–1825 (2021). https://doi.org/10.1134/S0036024421090107
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DOI: https://doi.org/10.1134/S0036024421090107