Water confined in extended-nano spaces studied by NMR spectroscopy: A three-phase model

Takehiko Tsukahara, Wataru Mizutani, Akihide Hibara, Takehiko Kitamori

研究成果: Paper査読

抄録

This report describes characterization of molecular motions of water confined in well-defined 10 nm - 100 nm scale channels on a microchip (called extended-nano spaces) based on NMR spectroscopy results. We found that the relaxation rates of water were increased by size-confinement in the range of not only 200 - 800 nm but also 4 - 40 nm, while the rates did not depend on the space sizes of 40 - 200 nm. These results could be expressed quantitatively by a three-phase exchange model suggesting that the water motions in extended-nano spaces are controlled by the fraction of three phases, including the bulk phase (SB), the proton transfer phase (SP), and the adsorbed phase (Sa).

本文言語English
ページ546-548
ページ数3
出版ステータスPublished - 2006 1 1
外部発表はい
イベント10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006 - Tokyo, Japan
継続期間: 2006 11 52006 11 9

Other

Other10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006
国/地域Japan
CityTokyo
Period06/11/506/11/9

ASJC Scopus subject areas

  • 化学工学(その他)
  • バイオエンジニアリング

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