XPS and NEXAFS studies of VUV/O3-treated aromatic polyurea and its application to microchip electrophoresis

H. Shinohara; A. Nakahara; F. Kitagawa; Y. Takahashi; K. Otsuka; S. Shoji; O. Ohara; J. Mizuno

doi:10.1049/iet-nbt.2011.0006

XPS and NEXAFS studies of VUV/O₃-treated aromatic polyurea and its application to microchip electrophoresis

H. Shinohara^*, A. Nakahara, F. Kitagawa, Y. Takahashi, K. Otsuka, S. Shoji, O. Ohara, J. Mizuno

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

In this study, the authors performed X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) studies of vacuum ultraviolet (VUV)/O₃-treated aromatic polyurea films to investigate their treatment effects. XPS and NEXAFS spectra indicate that the benzene ring was cleaved after treatment and that carboxyl, hydroxyl, ketone and aldehyde groups were formed at the cleaved sites. The VUV/O₃-treated polyurea film was applied to a polymethylmethacrylate (PMMA) microchip for microchip electrophoresis (MCE) of bovine serum albumin (BSA). Fast electro-osmotic mobility of 4.6×10^-4cm²/V/s as well as reduction of the BSA adhesion was achieved. This functional surface is useful for high-speed MCE analysis.

Original language	English
Pages (from-to)	136-142
Number of pages	7
Journal	IET Nanobiotechnology
Volume	5
Issue number	4
DOIs	https://doi.org/10.1049/iet-nbt.2011.0006
Publication status	Published - 2011 Dec
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biotechnology
Electrical and Electronic Engineering

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10.1049/iet-nbt.2011.0006

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title = "XPS and NEXAFS studies of VUV/O3-treated aromatic polyurea and its application to microchip electrophoresis",

abstract = "In this study, the authors performed X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) studies of vacuum ultraviolet (VUV)/O3-treated aromatic polyurea films to investigate their treatment effects. XPS and NEXAFS spectra indicate that the benzene ring was cleaved after treatment and that carboxyl, hydroxyl, ketone and aldehyde groups were formed at the cleaved sites. The VUV/O3-treated polyurea film was applied to a polymethylmethacrylate (PMMA) microchip for microchip electrophoresis (MCE) of bovine serum albumin (BSA). Fast electro-osmotic mobility of 4.6×10-4cm2/V/s as well as reduction of the BSA adhesion was achieved. This functional surface is useful for high-speed MCE analysis.",

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AU - Shinohara, H.

AU - Nakahara, A.

AU - Kitagawa, F.

AU - Takahashi, Y.

AU - Otsuka, K.

AU - Shoji, S.

AU - Ohara, O.

AU - Mizuno, J.

PY - 2011/12

Y1 - 2011/12

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XPS and NEXAFS studies of VUV/O₃-treated aromatic polyurea and its application to microchip electrophoresis

Abstract

ASJC Scopus subject areas

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