Studying nanoparticle-induced structural changes within fatty acid multilayer films using sum frequency generation vibrational spectroscopy

Jasper Holman, Shen Ye, David J. Neivandt, Paul B. Davies

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The nonlinear optical technique of sum frequency generation (SFG) vibrational spectroscopy has been used for the first time to study CdS nanoparticle/arachidic acid multilayer structures. Using a combination of per-deuterated and per-protonated arachidic acid, it is possible to study individual layers anywhere within the film, buried or on the surface. Before reaction with H2S all layers are highly ordered, but after the reaction the layers become highly disordered, except for the surface layer, which remains well ordered. This sheds new light on the structure and stability of these films and shows that SFG can provide unique structural information.

Original languageEnglish
Pages (from-to)14322-14323
Number of pages2
JournalJournal of the American Chemical Society
Volume126
Issue number44
DOIs
Publication statusPublished - 2004 Nov 10
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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