Chemistry, Physics and Technology of Surface, 2011, 2 (2), 190-200.

Hydration Shell Structure of the Surface of SiO2/DNA(Dox) and SiO2/DNA(Dox)/Fullerene С60 Composite Systems



V. V. Turov, A. P. Ugnivenko, V. M. Barvinchenko, T. V. Krupska, S. V. Chekhun, Yu. I. Prylutskyy

Abstract


The structure of the hydrate cover of SiO2/DNA(Dox) and SiO2/DNA(Dox)/Full nanocomposites in the medium of non-polar organic solvent CCl4was studied using the low-temperature 1H NMR spectroscopy. For strongly associated interfacial water clusters the distributions were obtained along the radius as well as the changes in the Gibbs free energy stipulated by adsorption interaction with the surface of nanoparticles. It has been shown that the hydration properties of these composites differ from those of the solid particles of DNA or SiO2/DNA composite structure of weakly associated water clusters. It has been found that the introduction of additional portions of water into the dispersion medium (CCl4) near interfaces results in formation long-living of sub-micron clusters the submicron clusters of strongly associated water which can significantly affect the concentration ratio of strongly and weakly associated water.

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Copyright (©) 2011 V. V. Turov, A. P. Ugnivenko, V. M. Barvinchenko, T. V. Krupska, S. V. Chekhun, Yu. I. Prylutskyy

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