Structure of SAMs generated from functionalized thiols on gold

K. Tamada, J. Nagasswa, F. Nakanishi, K. Abe, M. Hara, W. Knoll, T. Ishida, H. Fukushima, S. Miyashita, T. Usui, T. Koini, T. R. Lee

研究成果: ジャーナルへの寄稿学術誌査読

54 被引用数 (Scopus)

抄録

The structure and growth of two classes of self-assembled monolayers (SAMs) on Au(111) derived from the adsorption of the functionalized thiol hexyl-azobenzenethiol (12-(4-(4-hexylphenylazo)phenoxy)dodecane-1-thiol) and the partially fluorinated alkanethiols (CF3(CF2)9(CH2)11SH and CF3(CF2)7(CH2)6SH were examined. The structural properties of the SAMs were strongly influenced by the interactions between the functional groups comprising the tails of the molecules. Molecular resolution atomic force microscopy (AFM) images of the hexyl-azobenzenethiol SAMs revealed an expanded lattice (nearest neighbor spacing, a · 0.53 nm, b · 0.56 nm, and angle between the two axes, φ · 85·) relative to those of simple azobenzene-terminated SAMs. The expanded lattice probably results from the presence of the hexyl tail groups. The structure of the SAMs formed from the fluorinated alkanethiols was also probed by AFM, Fourier transform infrared spectroscopy (FTIR-RAS) and dynamic contact angle measurements. The degree of molecular tilt of the fluorocarbon halix appears to be influenced by the length of the methyl enespacer moieties, which might result from the introduction of flexibility into the molecular chains.

本文言語英語
ページ(範囲)150-155
ページ数6
ジャーナルThin Solid Films
327-329
1-2
DOI
出版ステータス出版済み - 1998
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 表面および界面
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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