Theoretical study of intermolecular interaction at the lipid-water interface. 2. Analysis based on the Poisson-Boltzmann equation

Hirohisa Tamagawa, Minoru Sakurai, Yoshio Inoue, Katsuhiko Ariga, Toyoki Kunitake

研究成果: ジャーナルへの寄稿学術誌査読

94 被引用数 (Scopus)

抄録

The interaction between a lipid monolayer with positive surface charges and anionic species dissolved in the aqueous phase is investigated using the Poisson-Boltzmann equation. The monolayer and the aqueous phase are approximated by dielectric continuums whose dielectric constants are 2 and 80, respectively. It is assumed that positive charges are periodically distributed on the interface formed by the two dielectrics. For such a system, the Poisson-Boltzmann equation is analytically solved with the Debye-Hiickel approximation. It is indicated that the potential on the water side is significantly modulated by the presence of the lipid phase. This effectively contributes to a strengthening of intermolecular interaction near or on the interface. In addition, the interaction depends on the surface charge density on the monolayer. Combining these findings and the results of a previous quantum chemical study (Part 1 in a series of our studies), we discuss the reason why intermolecular binding is enhanced at the air-water interface.

本文言語英語
ページ(範囲)4817-4825
ページ数9
ジャーナルJournal of Physical Chemistry B
101
24
DOI
出版ステータス出版済み - 6月 12 1997
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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