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首页> 外文期刊>Nanotechnology >Specific detection of interactions between uncharged surfaces in different solvents: high-resolution imaging by chemical force microscopy
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Specific detection of interactions between uncharged surfaces in different solvents: high-resolution imaging by chemical force microscopy

机译：特定检测不同溶剂中不带电表面之间的相互作用：通过化学力显微镜进行高分辨率成像

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摘要

The detection of hydroxyl-groups by chemicalforce microscopy is investigated in two contrasting solvents:water and hexadecane. Gold-coated cantilevers were chemicallymodified in a defined way by self-assembly monolayers (SAMs)formed by mercapto-undecanol. The samples employed consistedof ultraflat gold surfaces terminated by hydroxyl- and methyl-groups. Both surface terminations were present on the samplesurface in a well-defined pattern obtained by micro-contactprinting (μCP).High-resolution lateral force microscopy(LFM)was conducted in both solvents. These LFM measurements werecomplemented by measurements of the adhesion forces on thesame substrates. In contrast to water, the employment ofhexadecane, it enables specific detection of hydroxyl-groups andclear interpretation of the friction contrast.
机译：在两种对比溶剂：水和十六烷中研究了用化学力显微镜检测羟基的方法。通过巯基十一烷醇形成的自组装单分子层（SAMs），以规定的方式对涂金的悬臂进行了化学修饰。所使用的样品由被羟基和甲基封端的超平金表面组成。两种表面均以通过微接触印刷（μCP）获得的清晰图案存在于样品表面上。在两种溶剂中均进行了高分辨率横向力显微镜（LFM）。这些LFM测量通过测量相同基材上的粘附力来补充。与水相反，使用十六烷，它可以特异性检测羟基并清楚地解释摩擦反差。

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