New information on water interfacial structure revealed by phase-sensitive surface spectroscopy

被引：380

作者：

Ostroverkhov, V ^{[1
]}

Waychunas, GA

Shen, YR

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.94.046102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A phase-sensitive sum-frequency vibrational spectroscopic technique is developed to study interfacial water structure of water/quartz interfaces. Measurements allow deduction of both real and imaginary parts of the surface nonlinear spectral response, revealing an unprecedentedly detailed picture of the net polar orientations of the water species at the interface. The orientations of the icelike and liquidlike species appear to respond very differently to the bulk pH change indicating the existence of different surface sites on quartz with different deprotonation pK values.

引用

页数：4

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