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Shape Transformation and Visible Region Plasmonic Modulation of Silver Nanoplates by Graphene Oxide

Authors

  • Ping Wang,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China
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  • Haili He,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China
    2. Graduate University of the Chinese Academy of Sciences, Beijing 100039, P. R. China
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  • Yongdong Jin

    Corresponding author
    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China
    • State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China.
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Abstract

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The plasmon band of Ag nanoplates can be continuously tuned over the visible region by simply stirring with graphene oxide (GO) nanosheets, accompanied with the shape transformation from triangle to round. The ability of GO to competitively adsorb ligands (from Ag nanoplates) has been considered to response for this interesting change. Through the protection of sufficient citrate ions, the resultant Ag nanoplates exhibit the excellent stability over a long time without noticeable change of their optical properties.

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