Surface-enhanced nonresonance Raman scattering from size- and morphology-controlled gold nanoparticle films

Mototsugu Suzuki, Yasuro Niidome, Yutaka Kuwahara, Nao Terasaki, Kazuma Inoue, Sunao Yamada

    Research output: Contribution to journalArticlepeer-review

    129 Citations (Scopus)

    Abstract

    Gold nanoparticle films with different particles sizes (35 ± 5, 15 ± 1 nm) and agglomerated states were prepared on glass substrates, by salting-out the colloidal solutions with NaC1O4 or NaOH. An ethanol solution of rhodamine 6G was cast on the gold nanoparticle film and the surface-enhanced Raman scattering (SERS) spectrum was measured. We found that the intensity of the SERS signal was higher for the film with larger particles and that the film prepared from NaClO4 gave higher SERS signals than that prepared from NaOH. Considerable coalescence of larger gold nanoparticles was quite effective for obtaining larger SERS signals. The SERS enhancement factor was estimated to be ∼108 for the film prepared from NaClO4.

    Original languageEnglish
    Pages (from-to)11660-11665
    Number of pages6
    JournalJournal of Physical Chemistry B
    Volume108
    Issue number31
    DOIs
    Publication statusPublished - Aug 5 2004

    All Science Journal Classification (ASJC) codes

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

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