Nanorods: Self-Assembly of Au@Ag Nanorods Mediated by Gemini Surfactants for Highly Efficient SERS-Active Supercrystals (Advanced Optical Materials 7/2013)

Authors

  • Sergio Gómez-Graña,

    1. Departamento de Química Física, Universidade de Vigo, Vigo, Spain
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  • Jorge Pérez-Juste,

    1. Departamento de Química Física, Universidade de Vigo, Vigo, Spain
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  • Ramón A. Alvarez-Puebla,

    1. ICREA (Catalan Institution for Research and Advanced Studies), Barcelona, Spain
    2. Department of Electronic Engineering, Universitat Rovira i Virgili, Tarragona, Spain
    3. Center for Chemical Technology of Catalonia, Tarragona, Spain
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  • Andrés Guerrero-Martínez,

    Corresponding author
    1. Departamento de Química Física I, Universidad Complutense, Madrid, Spain
    • ICREA (Catalan Institution for Research and Advanced Studies), Barcelona, Spain
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  • Luis M. Liz-Marzán

    Corresponding author
    1. BioNanoPlasmonics Laboratory, Donostia - San Sebastián, Spain
    2. Ikerbasque, Basque Foundation for Science, Bilbao, Spain
    • Departamento de Química Física, Universidade de Vigo, Vigo, Spain
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Abstract

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A silver coating takes the lead in the SERS enhancement contest for nanorod supercrystals. On page 477, A. Guerrero-Martínez, L. M. Liz-Marzán, and co-workers determine that supercrystals based on standing core–shell gold–silver nanorods stabilized by gemini surfactants are the SERS champions, knocking out their gold nanorod supercrystal counterparts. After a tough competition, silver substrates show a perfect combination of high optical activity and large homogeneous sensing area that will be difficult to defeat.

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