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Templated syntheses of Pt thin films with feature sizes of 3, 6 and 9 nm and their effects on SERS

Authors

  • Ki-Rim Lee,

    1. Department of Chemistry, BK-21 School of Chemical Materials, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, Korea
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  • Min-Hye Kim,

    1. Department of Chemistry, BK-21 School of Chemical Materials, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, Korea
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  • Jeung-Eun Hong,

    1. Department of Chemistry, BK-21 School of Chemical Materials, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, Korea
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  • Young-Uk Kwon

    Corresponding author
    • Department of Chemistry, BK-21 School of Chemical Materials, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, Korea
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Young-Uk Kwon, Department of Chemistry, BK-21 School of Chemical Materials, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746, Korea. E-mail: ywkwon@skku.edu

Abstract

We report on the syntheses of nanostructured Pt films with three different feature sizes of 3, 6 and 9 nm and their effects to the surface enhance Raman spectroscopy of rhodamine 6G (Rh6G) analytes. The syntheses of the Pt films have been achieved through templating the pore structures of mesoporous silica thin films (MSTFs). For the purpose of the present study, we synthesized three MSTFs with pore sizes 3, 6 and 9 nm. Other than the pore sizes, the silica thin films have the same pore structures. The Pt films have been synthesized by depositing Pt into the pores of the template MSTFs and removing the templates after the deposition. The Pt films produce strong Raman spectra of Rh6G with the intensity increasing as the feature size of the Pt film increases. Simulations of the induced electromagnetic fields on the Pt films show the same trend as the observed Raman intensity with the feature size. Copyright © 2012 John Wiley & Sons, Ltd.

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