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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2011, Volume 94, Issue 7, Pages 625–628
(Mi jetpl2352)
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This article is cited in 18 scientific papers (total in 18 papers)
BIOPHYSICS
Condensation of silica nanoparticles on a phospholipid membrane
V. E. Asadchikova, V. V. Volkova, Yu. O. Volkova, K. A. Demboa, I. V. Kozhevnikova, B. S. Roshchina, D. A. Frolova, A. M. Tikhonovb a Institute of Cristallography RAS
b P. L. Kapitza Institute for Physical Problems
Abstract:
The structure of the transient layer at the interface between air and the aqueous solution of silica nanoparticles with the size distribution of particles that has been determined from small-angle scattering has been studied by the X-ray reflectometry method. The reconstructed depth profile of the polarizability of the substance indicates the presence of a structure consisting of several layers of nanoparticles with the thickness that is more than twice as large as the thickness of the previously described structure. The adsorption of 1,2-distearoyl-sn-glycero-3-phosphocholine molecules at the hydrosol/air interface is accompanied by the condensation of anion silica nanoparticles at the interface. This phenomenon can be qualitatively explained by the formation of the positive surface potential due to the penetration and accumulation of Na$^+$ cations in the phospholipid membrane.
Received: 10.08.2011 Revised: 19.08.2011
Citation:
V. E. Asadchikov, V. V. Volkov, Yu. O. Volkov, K. A. Dembo, I. V. Kozhevnikov, B. S. Roshchin, D. A. Frolov, A. M. Tikhonov, “Condensation of silica nanoparticles on a phospholipid membrane”, Pis'ma v Zh. Èksper. Teoret. Fiz., 94:7 (2011), 625–628; JETP Letters, 94:7 (2011), 585–587
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https://www.mathnet.ru/eng/jetpl2352 https://www.mathnet.ru/eng/jetpl/v94/i7/p625
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Abstract page: | 289 | Full-text PDF : | 81 | References: | 50 |
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