Preparation and Tribological Study of a Peptide-Containing Alkylsiloxane Monolayer on Silicon

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• 作者：Shiyong Song ; Sili Ren ; Jinqing Wang ; Shengrong Yang ; and Junyan Zhang
• 刊名：Langmuir
• 出版年：2006
• 出版时间：July 4, 2006
• 年：2006
• 卷：22
• 期：14
• 页码：6010 - 6015
• 全文大小：157K
• 年卷期：v.22,no.14(July 4, 2006)
• ISSN：1520-5827

文摘

A peptide-containing alkylsilane self-assembled monolayer on silicon surface has been prepared successfully bya simple one-step strategy. The formation and structure of the peptide-containing SAMs were characterized by meansof contact angle measurement, ellipsometry, FT-IR, and AFM morphology observation. It was found that the watercontent in the hydrolysis solution plays a key role in determining the quality of the monolayers. The micro-tribologicalproperties of various films were evaluated by using AFM, while the macro-tribological study was performed on aball-on-plate tribometer. It was found that the peptide-containing monolayers possess excellent friction-reduction andantiwear ability, which was attributed to its amide-containing structure. In other words, the interchain hydrogen bondsamong the molecules enhance the stability of the monolayers against rubbing the counterpart ball and thus endowit an outstanding antiwear ability.