J. M. Devterova, M. E. Sokolov, V. Yu. Buz'ko, I. N. Repina, P. S. Rudnov, V. T. Panyushkin, “Subphase pH effect on the limiting molecular area of amphiphilic β-diketones in Langmuir monolayers”, Mendeleev Commun., 2020, Volume 30, Issue 4,Pages <nobr>505

This article is cited in 10 papers

Communications

Subphase pH effect on the limiting molecular area of amphiphilic β-diketones in Langmuir monolayers

J. M. Devterova^a, M. E. Sokolov^b, V. Yu. Buz'ko^b, I. N. Repina^b, P. S. Rudnov^a, V. T. Panyushkin^a

^a Department of Chemistry and High Technology, Kuban State University, Krasnodar, Russian Federation
^b Department of Physics and Technics, Kuban State University, Krasnodar, Russian Federation

Abstract: Theoretical and experimental limiting molecular area values for a series of amphiphilic α- and γ-substituted β-diketones have been analyzed and compared. The investigated β-diketones exist in Langmuir monolayers as mixtures of keto and enol tautomeric forms. The ratio of the forms depends on the subphase pH and affects the shape of surface pressure–area isotherm and the experimentally determined limiting molecular area value for the monolayer.

Keywords: Langmuir monolayer, amphiphilic β-diketones, keto-enol tautomerism, tautomeric forms, limiting molecular area, compression isotherm, theoretical calculations.

Language: English

DOI: 10.1016/j.mencom.2020.07.034

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