Surface-active substance monolayer stability after its formation

Anna S. Kolesnikova; Roman A. Safonov; Oksana A. Shinkarenko; Mikhail V. Pozharov; Evgeny G. Glukhovskoy

doi:10.1117/12.2508370

7 March 2019 Surface-active substance monolayer stability after its formation

Anna S. Kolesnikova, Roman A. Safonov, Oksana A. Shinkarenko, Mikhail V. Pozharov, Evgeny G. Glukhovskoy

Proceedings Volume 10893, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications XI; 108930R (2019) https://doi.org/10.1117/12.2508370
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

The effect of different concentrations of K⁺, Na⁺, Ca²⁺, Ni²⁺, Al³⁺ and Fe³⁺ ions on surface-active substance monolayer stability has been studied using molecular mechanics method. For numerical calculations, energy potential Amber was used. Arachidic acid was chosen as a surface-active substance for monolayer formation because it is insoluble in water at normal conditions. Energy stability values representing system stability was calculated for different ion concentrations. It is established that the most stable system is formed by trivalent metal ions and that system stability decreases together with ionic charge. For each type of ions, a concentration value corresponding to most optimal stability was found with further increase of ion concentration leading to decrease of stability.

Citation Download Citation

Anna S. Kolesnikova, Roman A. Safonov, Oksana A. Shinkarenko, Mikhail V. Pozharov, and Evgeny G. Glukhovskoy "Surface-active substance monolayer stability after its formation", Proc. SPIE 10893, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications XI, 108930R (7 March 2019); https://doi.org/10.1117/12.2508370

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