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

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


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 (US)
Pages (from-to)1845-1848
Number of pages4
JournalJournal of Physical Chemistry B
Issue number11
StatePublished - Mar 12 1998

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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