Quantitative Friction Map on Surface Composed of $\beta$-Cyclodextrin Monolayer
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概要
- 論文の詳細を見る
Our developing method “quantitative friction map” enables us to compare the spatial distribution of friction forces on the surface among separately scanned samples sensitively. We applied this technique to evaluate the friction acting between mono-[6-deoxy-6-[(mercaptoethyl)amino]]-$\beta$-cyclodextrin ($\beta$-CD-EA-SH) and OH-terminated C11 alkanethiol (OH-C11-SH) self-assembled monolayers (SAMs) in terms of symmetric and asymmetric features. The friction acting between symmetric $\beta$-CD-EA-SH SAMs is significantly larger than that acting between asymmetric $\beta$-CD-EA-SH SAM vs OH-C11-SH SAM and symmetric OH-C11-SH SAMs, although all the surfaces are commonly composed of hydroxyl terminated groups. The different frictional forces on these surfaces are closely correlated with the different adhesion forces, in which symmetric $\beta$-CD-EA-SH SAMs exhibited 1.5- and 1.3-fold larger pull-off force than $\beta$-CD-EA-SH SAM vs OH-C11-SH SAM and symmetric OH-C11-SH SAM vs OH-C11-SH SAM, respectively. Both force data can be explained by the “specific interactions” between glucose units on cyclodextrin heads rather than the deformation of the SAM by cantilever scanning.
- 2007-12-15
著者
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Hara Masahiko
Department of Cardiology, Osaka Rosai Hospital
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Makino Kenji
Department Of Radiology Nagasaki University School Of Medicine
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Tamada Kaoru
Department Of Electronic Chemistry Interdisciplinary Graduate School Of Science And Engineering Toky
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Nishikawa Naoki
Analytical Research Center R & D Headquarters Lion Corp
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Kumashiro Yoshikazu
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Hara Masahiko
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Sadaie Megumi
Analytical Technology Research Center, Lion Corporation, Edogawa, Tokyo 132-0035, Japan
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Ikezawa Yasunori
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Kumagai Yuuki
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Ohnishi Satomi
Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
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Makino Kenji
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Tamada Kaoru
Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Nishikawa Naoki
Analytical Technology Research Center, Lion Corporation, Edogawa, Tokyo 132-0035, Japan
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