Abstract
An infrared spectrum of the boundary water near a solid/water interface has been observed, which is distinguished from the bulk water using a novel analytical technique. The technique employs the variable-angle polarization specific (VAPS) attenuated total reflection (ATR) infrared spectrometry and a characteristic of principal component analysis (PCA). To date, near-field optical techniques or artificial polycrystalline water thin-layer formation technique have been used to study the structure of boundary-water molecules below the limitations of spatial resolution. Here, however, we show that the combination technique of VAPS-ATR and PCA analytically overcomes the difficulty of spatial resolution and detection limit, so that we selectively observe the boundary water. The orientation of the boundary-water molecules has been evaluated using the resolved infrared spectra obtained as the PCA loadings. In addition, it was also suggested that there was an intermediate layer between the boundary water layer and bulk water.
| Original language | English |
|---|---|
| Pages (from-to) | 12056-12060 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry B |
| Volume | 105 |
| Issue number | 48 |
| DOIs | |
| State | Published - Dec 6 2001 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
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Selective observation of boundary water near a solid/water interface by variable-angle polarization specific attenuated total reflection infrared spectroscopy and principal-component analysis. / Hasegawa, Takeshi; Nishijo, Jujiro; Imae, Toyoko; Huo, Qun; Leblanc, Roger.
In: Journal of Physical Chemistry B, Vol. 105, No. 48, 06.12.2001, p. 12056-12060.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Selective observation of boundary water near a solid/water interface by variable-angle polarization specific attenuated total reflection infrared spectroscopy and principal-component analysis
AU - Hasegawa, Takeshi
AU - Nishijo, Jujiro
AU - Imae, Toyoko
AU - Huo, Qun
AU - Leblanc, Roger
PY - 2001/12/6
Y1 - 2001/12/6
N2 - An infrared spectrum of the boundary water near a solid/water interface has been observed, which is distinguished from the bulk water using a novel analytical technique. The technique employs the variable-angle polarization specific (VAPS) attenuated total reflection (ATR) infrared spectrometry and a characteristic of principal component analysis (PCA). To date, near-field optical techniques or artificial polycrystalline water thin-layer formation technique have been used to study the structure of boundary-water molecules below the limitations of spatial resolution. Here, however, we show that the combination technique of VAPS-ATR and PCA analytically overcomes the difficulty of spatial resolution and detection limit, so that we selectively observe the boundary water. The orientation of the boundary-water molecules has been evaluated using the resolved infrared spectra obtained as the PCA loadings. In addition, it was also suggested that there was an intermediate layer between the boundary water layer and bulk water.
AB - An infrared spectrum of the boundary water near a solid/water interface has been observed, which is distinguished from the bulk water using a novel analytical technique. The technique employs the variable-angle polarization specific (VAPS) attenuated total reflection (ATR) infrared spectrometry and a characteristic of principal component analysis (PCA). To date, near-field optical techniques or artificial polycrystalline water thin-layer formation technique have been used to study the structure of boundary-water molecules below the limitations of spatial resolution. Here, however, we show that the combination technique of VAPS-ATR and PCA analytically overcomes the difficulty of spatial resolution and detection limit, so that we selectively observe the boundary water. The orientation of the boundary-water molecules has been evaluated using the resolved infrared spectra obtained as the PCA loadings. In addition, it was also suggested that there was an intermediate layer between the boundary water layer and bulk water.
UR - http://www.scopus.com/inward/record.url?scp=0035819182&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035819182&partnerID=8YFLogxK
U2 - 10.1021/jp0115852
DO - 10.1021/jp0115852
M3 - Article
AN - SCOPUS:0035819182
VL - 105
SP - 12056
EP - 12060
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
SN - 1520-6106
IS - 48
ER -