Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering

Fredrick W. Vance; Buford I. Lemon; Jessica A. Ekhoff; Joseph T. Hupp

doi:10.1021/jp9800261

Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering

Fredrick W. Vance, Buford I. Lemon, Jessica A. Ekhoff, Joseph T. Hupp^*

^*Corresponding author for this work

Chemistry

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

36 Scopus citations

Abstract

Hyper-Rayleigh scattering (HRS) experiments performed on nanometer-scale SiO₂/water interfaces (aqueous colloidal suspensions) display finite, measurable signals. HRS is not constrained by the orientational, size, and/or charge restrictions inherent to conventional interfacial second harmonic generation (SHG) or electric-field-induced SHG measurements. Thus, apparently for the first time, the second-order nonlinear optical (NLO) response of ultrasmall interfaces has been measured. pH- and electrolyte-dependent experiments show the response to be sensitive to changes in chemical composition at the silicon dioxide/solution interface. HRS provides detailed information about the surface of these technologically interesting and important particles in their native solution-phase environment.

Original language	English (US)
Pages (from-to)	1845-1848
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	102
Issue number	11
DOIs	https://doi.org/10.1021/jp9800261
State	Published - Mar 12 1998

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering",

abstract = "Hyper-Rayleigh scattering (HRS) experiments performed on nanometer-scale SiO2/water interfaces (aqueous colloidal suspensions) display finite, measurable signals. HRS is not constrained by the orientational, size, and/or charge restrictions inherent to conventional interfacial second harmonic generation (SHG) or electric-field-induced SHG measurements. Thus, apparently for the first time, the second-order nonlinear optical (NLO) response of ultrasmall interfaces has been measured. pH- and electrolyte-dependent experiments show the response to be sensitive to changes in chemical composition at the silicon dioxide/solution interface. HRS provides detailed information about the surface of these technologically interesting and important particles in their native solution-phase environment.",

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T1 - Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering

AU - Vance, Fredrick W.

AU - Lemon, Buford I.

AU - Ekhoff, Jessica A.

AU - Hupp, Joseph T.

PY - 1998/3/12

Y1 - 1998/3/12

N2 - Hyper-Rayleigh scattering (HRS) experiments performed on nanometer-scale SiO2/water interfaces (aqueous colloidal suspensions) display finite, measurable signals. HRS is not constrained by the orientational, size, and/or charge restrictions inherent to conventional interfacial second harmonic generation (SHG) or electric-field-induced SHG measurements. Thus, apparently for the first time, the second-order nonlinear optical (NLO) response of ultrasmall interfaces has been measured. pH- and electrolyte-dependent experiments show the response to be sensitive to changes in chemical composition at the silicon dioxide/solution interface. HRS provides detailed information about the surface of these technologically interesting and important particles in their native solution-phase environment.

AB - Hyper-Rayleigh scattering (HRS) experiments performed on nanometer-scale SiO2/water interfaces (aqueous colloidal suspensions) display finite, measurable signals. HRS is not constrained by the orientational, size, and/or charge restrictions inherent to conventional interfacial second harmonic generation (SHG) or electric-field-induced SHG measurements. Thus, apparently for the first time, the second-order nonlinear optical (NLO) response of ultrasmall interfaces has been measured. pH- and electrolyte-dependent experiments show the response to be sensitive to changes in chemical composition at the silicon dioxide/solution interface. HRS provides detailed information about the surface of these technologically interesting and important particles in their native solution-phase environment.

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Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering

Abstract

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