Potential dependence of the structure of water at the hydrophobic liquid interface

Scott K. Shaw; Andrew A. Gewirth

doi:10.1016/j.jelechem.2007.06.016

Potential dependence of the structure of water at the hydrophobic liquid interface

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Abstract

Potential dependant infrared visible sum frequency generation spectroscopy (SFG) spectra of the aqueous/alkanethiol interface in the OH stretching region are presented. Spectra have been mathematically fit to extract information used to elucidate the structure and conformation of H₂O at these electrochemical interfaces and the existence of a 'flip-flop' model for water in these environments is investigated. Comparison to recent work on Ag(1 1 1)/aqueous interface and other works on hydrophobic/aqueous interfaces corroborates assignments of OH bands in the 3800-2800 cm^-1 region.

Original language	English (US)
Pages (from-to)	94-98
Number of pages	5
Journal	Journal of Electroanalytical Chemistry
Volume	609
Issue number	2
DOIs	https://doi.org/10.1016/j.jelechem.2007.06.016
State	Published - Nov 1 2007

Keywords

Alkanethiols
Hydrophobic interface
SFG
Water

ASJC Scopus subject areas

Chemical Engineering(all)
Analytical Chemistry
Electrochemistry

Online availability

10.1016/j.jelechem.2007.06.016

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title = "Potential dependence of the structure of water at the hydrophobic liquid interface",

abstract = "Potential dependant infrared visible sum frequency generation spectroscopy (SFG) spectra of the aqueous/alkanethiol interface in the OH stretching region are presented. Spectra have been mathematically fit to extract information used to elucidate the structure and conformation of H2O at these electrochemical interfaces and the existence of a 'flip-flop' model for water in these environments is investigated. Comparison to recent work on Ag(1 1 1)/aqueous interface and other works on hydrophobic/aqueous interfaces corroborates assignments of OH bands in the 3800-2800 cm-1 region.",

keywords = "Alkanethiols, Hydrophobic interface, SFG, Water",

author = "Shaw, {Scott K.} and Gewirth, {Andrew A.}",

note = "Funding Information: The authors acknowledge Dr. Lee J. Richter of NIST and Dr. Zac Schultz of NIH for supplying a fitting algorithm used with fitting several spectra in this work. SFG spectra were acquired in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the US Department of Energy under Grant DEFG02-91-ER45439. This work was funded by the National Science Foundation (CHE-06-03675), which is gratefully acknowledged.",

year = "2007",

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doi = "10.1016/j.jelechem.2007.06.016",

language = "English (US)",

volume = "609",

pages = "94--98",

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AU - Shaw, Scott K.

AU - Gewirth, Andrew A.

N1 - Funding Information: The authors acknowledge Dr. Lee J. Richter of NIST and Dr. Zac Schultz of NIH for supplying a fitting algorithm used with fitting several spectra in this work. SFG spectra were acquired in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the US Department of Energy under Grant DEFG02-91-ER45439. This work was funded by the National Science Foundation (CHE-06-03675), which is gratefully acknowledged.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - Potential dependant infrared visible sum frequency generation spectroscopy (SFG) spectra of the aqueous/alkanethiol interface in the OH stretching region are presented. Spectra have been mathematically fit to extract information used to elucidate the structure and conformation of H2O at these electrochemical interfaces and the existence of a 'flip-flop' model for water in these environments is investigated. Comparison to recent work on Ag(1 1 1)/aqueous interface and other works on hydrophobic/aqueous interfaces corroborates assignments of OH bands in the 3800-2800 cm-1 region.

AB - Potential dependant infrared visible sum frequency generation spectroscopy (SFG) spectra of the aqueous/alkanethiol interface in the OH stretching region are presented. Spectra have been mathematically fit to extract information used to elucidate the structure and conformation of H2O at these electrochemical interfaces and the existence of a 'flip-flop' model for water in these environments is investigated. Comparison to recent work on Ag(1 1 1)/aqueous interface and other works on hydrophobic/aqueous interfaces corroborates assignments of OH bands in the 3800-2800 cm-1 region.

KW - Alkanethiols

KW - Hydrophobic interface

KW - SFG

KW - Water

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M3 - Article

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SN - 0022-0728

VL - 609

SP - 94

EP - 98

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 2

ER -

Potential dependence of the structure of water at the hydrophobic liquid interface

Abstract

Keywords

ASJC Scopus subject areas

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