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ID 41288
本文ファイル
著者
Sasaki, Yuu
Horikawa, Yuka
Tokushima, Takashi
Okada, Kazumasa 大学院理学研究科 広大研究者総覧
Oura, Masaki
NDC
化学
抄録(英)
The hydration structure of trimethylamine N-oxide (TMAO) in aqueous solutions has been investigated by means of soft X-ray spectroscopy and chemometric analysis. Soft X-ray absorption spectra in the O 1s region have a concentration-dependent shoulder at 533 eV, which is assigned to the 6a1 resonance of TMAO. Soft X-ray emission spectra acquired at this resonance comprise both TMAO and water components, with a prominent peak at 525.6 eV which is assigned to the emission caused by the 5e to O 1s transition. An apparent inverse concentration dependence of around 523 eV suggests that the electronic structure of water is modified by the strong interaction with TMAO. Such an effect has been included in the quantitative spectral analysis, called the classical least squares regression method, to obtain information on the hydration structure of the system. The analysis indicates that nine or more water molecules interact with a TMAO molecule. The present method offers a useful technique for probing the solvation structure around the solute which interacts strongly with the solvent.
掲載誌名
Physical Chemistry Chemical Physics
18巻
39号
開始ページ
27648
終了ページ
27653
出版年月日
2016-10-21
出版者
Royal Society of Chemistry
ISSN
1463-9076
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) the Owner Societies 2016
Open Access Article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
関連情報URL(IsVersionOf)
http://doi.org/10.1039/C6CP03750J
部局名
理学研究科