Preparation and tribological study of a peptide-containing alkylsiloxane monolayer on silicon
Preparation and tribological study of a peptide-containing alkylsiloxane monolayer on silicon
复制标题
硅基含肽烷基硅氧烷单分子层的制备及摩擦学研究
DOI：
10.1021/la052868e
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发表时间：
2006-07-04
期刊：
影响因子：
3.9
通讯作者：
Zhang, Junyan
中科院分区：
文献类型：
--
作者：
Song, Shiyong;Ren, Sili;Zhang, Junyan
采用简单的一步合成法成功地在硅表面制备了含肽的烷基硅烷自组装单分子膜。通过接触角测量、椭偏仪、傅立叶变换红外光谱和原子力显微镜形貌观察等手段对含肽自组装膜的形成和结构进行了表征。结果发现，水解溶液中的水含量起着决定单分子膜质量的关键作用。利用原子力显微镜对各种薄膜的微观摩擦学性能进行了评价，而宏观摩擦学研究则在球-板摩擦磨损试验机上进行。结果表明，含肽单分子膜具有优异的减摩抗磨性能，这与其含酰胺结构有关。换句话说，分子间的链间氢键增强了单分子膜对摩擦球的稳定性，从而赋予其突出的抗磨能力。
A peptide-containing alkylsilane self-assembled monolayer on silicon surface has been prepared successfully by a simple one-step strategy. The formation and structure of the peptide-containing SAMs were characterized by means of contact angle measurement, ellipsometry, FT-IR, and AFM morphology observation. It was found that the water content in the hydrolysis solution plays a key role in determining the quality of the monolayers. The micro-tribological properties of various films were evaluated by using AFM, while the macro-tribological study was performed on a ball-on-plate tribometer. It was found that the peptide-containing monolayers possess excellent friction-reduction and antiwear ability, which was attributed to its amide-containing structure. In other words, the interchain hydrogen bonds among the molecules enhance the stability of the monolayers against rubbing the counterpart ball and thus endow it an outstanding antiwear ability.