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

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

Research output: Contribution to journalArticle

32 Citations (Scopus)

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 languageEnglish
JournalJournal of Physical Chemistry B
Volume102
Issue number11
Publication statusPublished - Mar 12 1998

Fingerprint

Rayleigh scattering
interrogation
Silicon Dioxide
Silica
Harmonic generation
silicon dioxide
Water
harmonic generations
water
Electrolytes
colloids
constrictions
Suspensions
chemical composition
Experiments
Electric fields
electrolytes
electric fields
Chemical analysis

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering. / Vance, Fredrick W.; Lemon, Buford I.; Ekhoff, Jessica A.; Hupp, Joseph T.

In: Journal of Physical Chemistry B, Vol. 102, No. 11, 12.03.1998.

Research output: Contribution to journalArticle

Vance, Fredrick W. ; Lemon, Buford I. ; Ekhoff, Jessica A. ; Hupp, Joseph T. / Interrogation of nanoscale silicon dioxide/water interfaces via Hyper-Rayleigh scattering. In: Journal of Physical Chemistry B. 1998 ; Vol. 102, No. 11.
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