Heat-induced morphological control of gold nanoparticle films for surface-enhanced Raman scattering (SERS) measurements

Mototsugu Suzuki, Yasuro Niidome, Sunao Yamada

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Gold nanosphere (NS) films with different morphologies were prepared on glass substrates, by salting-out the colloidal solution with NaOH or NaClO4, and subsequent annealing at 100-150 °C. Surface-enhanced Raman scattering (SERS) spectra of rhodamine 6G (R6G) were measured by casting the R6G solution or by dipping into the R6G solution. Annealing at elevated temperatures certainly enhanced the SERS signal, though the optimum annealing temperature was different with the initial morphology of the NS film. The NS film prepared from NaClO4 and annealed at 100 °C gave the largest SERS signal in this study.

    Original languageEnglish
    Pages (from-to)388-394
    Number of pages7
    JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
    Volume284-285
    DOIs
    Publication statusPublished - Aug 15 2006

    All Science Journal Classification (ASJC) codes

    • Surfaces and Interfaces
    • Physical and Theoretical Chemistry
    • Colloid and Surface Chemistry

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