Structure of liquid propionitrile at interfaces. 2. Experiment

Feng Ding; Qin Zhong; Katherine Manfred; Xiaoxiao He; John S. Bender; Michael R. Brindza; Robert A. Walker; John T. Fourkas

doi:10.1021/jp211061p

Structure of liquid propionitrile at interfaces. 2. Experiment

Feng Ding, Qin Zhong, Katherine Manfred, Xiaoxiao He, John S. Bender, Michael R. Brindza, Robert A. Walker^*, John T. Fourkas

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Propionitrile has been studied at the liquid/vapor, silica/vapor, and silica/liquid interfaces using vibrational sum-frequency generation (VSFG) spectroscopy and optical Kerr effect (OKE) spectroscopy. VSFG studies show that the alkyl tail of propionitrile tends to point into the vapor phase at the liquid/vapor and silica/vapor interfaces. At the silica/liquid interface, all vibrational resonances except for the methylene symmetric stretch exhibit strong cancellation in the VSFG signal. This result supports the existence of a lipid-bilayer-like organization at the silica/liquid interface, in agreement with simulation. OKE data for propionitrile confined in porous sol-gel glasses indicate that there is a surface layer, with a thickness of roughly 4 Å, that experiences inhibited orientational dynamics. The OKE data thus corroborate the picture of interfacial organization suggested by the VSFG results.

Original language	English
Pages (from-to)	4019-4025
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	116
Issue number	6
DOIs	https://doi.org/10.1021/jp211061p
Publication status	Published - 16 Feb 2012

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title = "Structure of liquid propionitrile at interfaces. 2. Experiment",

abstract = "Propionitrile has been studied at the liquid/vapor, silica/vapor, and silica/liquid interfaces using vibrational sum-frequency generation (VSFG) spectroscopy and optical Kerr effect (OKE) spectroscopy. VSFG studies show that the alkyl tail of propionitrile tends to point into the vapor phase at the liquid/vapor and silica/vapor interfaces. At the silica/liquid interface, all vibrational resonances except for the methylene symmetric stretch exhibit strong cancellation in the VSFG signal. This result supports the existence of a lipid-bilayer-like organization at the silica/liquid interface, in agreement with simulation. OKE data for propionitrile confined in porous sol-gel glasses indicate that there is a surface layer, with a thickness of roughly 4 {\AA}, that experiences inhibited orientational dynamics. The OKE data thus corroborate the picture of interfacial organization suggested by the VSFG results.",

author = "Feng Ding and Qin Zhong and Katherine Manfred and Xiaoxiao He and Bender, {John S.} and Brindza, {Michael R.} and Walker, {Robert A.} and Fourkas, {John T.}",

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T1 - Structure of liquid propionitrile at interfaces. 2. Experiment

AU - Ding, Feng

AU - Zhong, Qin

AU - Manfred, Katherine

AU - He, Xiaoxiao

AU - Bender, John S.

AU - Brindza, Michael R.

AU - Walker, Robert A.

AU - Fourkas, John T.

PY - 2012/2/16

Y1 - 2012/2/16

N2 - Propionitrile has been studied at the liquid/vapor, silica/vapor, and silica/liquid interfaces using vibrational sum-frequency generation (VSFG) spectroscopy and optical Kerr effect (OKE) spectroscopy. VSFG studies show that the alkyl tail of propionitrile tends to point into the vapor phase at the liquid/vapor and silica/vapor interfaces. At the silica/liquid interface, all vibrational resonances except for the methylene symmetric stretch exhibit strong cancellation in the VSFG signal. This result supports the existence of a lipid-bilayer-like organization at the silica/liquid interface, in agreement with simulation. OKE data for propionitrile confined in porous sol-gel glasses indicate that there is a surface layer, with a thickness of roughly 4 Å, that experiences inhibited orientational dynamics. The OKE data thus corroborate the picture of interfacial organization suggested by the VSFG results.

AB - Propionitrile has been studied at the liquid/vapor, silica/vapor, and silica/liquid interfaces using vibrational sum-frequency generation (VSFG) spectroscopy and optical Kerr effect (OKE) spectroscopy. VSFG studies show that the alkyl tail of propionitrile tends to point into the vapor phase at the liquid/vapor and silica/vapor interfaces. At the silica/liquid interface, all vibrational resonances except for the methylene symmetric stretch exhibit strong cancellation in the VSFG signal. This result supports the existence of a lipid-bilayer-like organization at the silica/liquid interface, in agreement with simulation. OKE data for propionitrile confined in porous sol-gel glasses indicate that there is a surface layer, with a thickness of roughly 4 Å, that experiences inhibited orientational dynamics. The OKE data thus corroborate the picture of interfacial organization suggested by the VSFG results.

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JO - Journal of Physical Chemistry C

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Structure of liquid propionitrile at interfaces. 2. Experiment

Abstract

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