Fluorinated Langmuir monolayers are more viscous than non-fluorinated monolayers

D. Murakami, U. Langer, Z. Khattari, Th M. Fischer

研究成果: ジャーナルへの寄稿学術誌査読

3 被引用数 (Scopus)

抄録

The surface shear viscosity of the liquid expanded phase in Langmuir monolayers of fluorinated alcohols differs by orders of magnitude from the corresponding surface shear viscosity of Langmuir monolayers of their non-fluorinated counterparts. The line tension between the liquid expanded and the gaseous phase on the other hand is of similar magnitude for both fluorinated and non-fluorinated surfactants. The difference of fluorinated versus non-fluorinated monolayers is measured by active microrheology and by observing the shape relaxation of distorted liquid expanded domains toward a circular shape. Our microrheology measurements are supported by measurements of the relaxation rates of distortions, which in fluorinated liquid expanded phases are proportional to the deviation of the curvature from the mean curvature, whereas they are proportional to the square of the deviation of the curvature from the mean curvature in non-fluorinated monolayers.

本文言語英語
ページ(範囲)5376-5379
ページ数4
ジャーナルJournal of Physical Chemistry B
114
16
DOI
出版ステータス出版済み - 4月 29 2010
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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