Spontaneous adsorption on a hydrophobic surface governed by hydrogen bonding

Fuquan Dang, Takeshi Hasegawa, Vasudevanpillai Biju, Mitsuru Ishikawa, Noritada Kaji, Takao Yasui, Yoshinobu Baba

研究成果: ジャーナルへの寄稿学術誌査読

15 被引用数 (Scopus)

抄録

Spontaneous adsorption from solution onto solid surface is a common phenomenon in nature, but the force that governs adsorption is still a matter of considerable debate.1,2 We found that surfactants and cellulose adsorb from solution onto a poly(methyl methacrylate) (PMMA) surface in an ordered and cooperative way governed by hydrogen bonding. The glucose rings of n-dodecyl-β-D-maltoside (DDM) and hydroxyethylcellulose (HEC) stand perpendicular to the surface, H-bond to the surface COOMe groups with their C=O and Me-O bonds parallel to the surface, and form a tight monolayer. The non-H-bonded COOMe groups orient their C=O bonds perpendicular to the surface. In contrast, the glucose rings of hydrophobically modified hydroxyethylcellulose (HMHEC) lie flat with the side chains perpendicular to the surface and H-bond to the perpendicular-oriented C=O groups. The non-H-bonded COOMe groups orient their C=O bonds parallel but Me-O bonds near-perpendicular to the surface for stabilizing HMHEC. The current work provides a detailed picture of how surface-active molecules interact with a solid surface and selfassemble into greatly different architectures.

本文言語英語
ページ(範囲)9296-9301
ページ数6
ジャーナルLangmuir
25
16
DOI
出版ステータス出版済み - 8月 18 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料科学一般
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

フィンガープリント

「Spontaneous adsorption on a hydrophobic surface governed by hydrogen bonding」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル