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Structure and Reactivity of Alkoxycarbonyl (Ester)-Terminated Monolayers on Silicon : Sum Frequency Generation Spectroscopy

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Title: Structure and Reactivity of Alkoxycarbonyl (Ester)-Terminated Monolayers on Silicon : Sum Frequency Generation Spectroscopy
Authors: Asanuma, Hidehiko Browse this author
Noguchi, Hidenori Browse this author
Uosaki, Kohei Browse this author →KAKEN DB
Yu, Hua-Zhong Browse this author
Issue Date: 16-Mar-2006
Publisher: American Chemical Society
Journal Title: Journal of Physical Chemistry B
Volume: 110
Issue: 10
Start Page: 4892
End Page: 4899
Publisher DOI: 10.1021/jp056131+
Abstract: Carboxylic acid-terminated monolayers on crystalline silicon surfaces can be readily modified with biological macromolecules for the fabrication of semiconductor-based biosensing devices. They were prepared by acid-catalyzed hydrolysis of alkoxycarbonyl (ester)-terminated monolayers and studied by vibrational sum frequency generation (SFG) spectroscopy. The C-H vibration region of the SFG spectra consists of strong methyl bands with significant contributions from methylene stretching modes, indicating that these monolayers are generally ordered but with considerable gauche defects in the alkyl chains in comparison with n-alkyl monolayers. After hydrolysis, the methylene stretching modes prevail, with "residues" of the methyl bands, indicating incomplete hydrolysis and disruption of the monolayer structure. This work demonstrates that SFG is capable of providing quantitative information on structure-reactivity correlations in organic monolayers.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 魚崎 浩平

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