Plasmon-Mediated Synthesis of Heterometallic Nanorods and Icosahedra

Authors

  • Mark R. Langille,

    1. Department of Chemistry and International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA), Fax: (+1) 847-467-5123
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    • These authors contributed equally to this work.

  • Jian Zhang,

    1. Department of Chemistry and International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA), Fax: (+1) 847-467-5123
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    • These authors contributed equally to this work.

  • Prof. Chad A. Mirkin

    Corresponding author
    1. Department of Chemistry and International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA), Fax: (+1) 847-467-5123
    • Department of Chemistry and International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (USA), Fax: (+1) 847-467-5123
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  • This work was supported by the MRSEC program of the National Science Foundation at the Material Research Center of Northwestern University. The electron microscopy work was performed in the EPIC facilities of NUANCE Center at Northwestern University. NUANCE Center is supported by NSF-NSEC, NSF-MRSEC, Keck Foundation, the State of Illinois, and Northwestern University. C.A.M. is grateful for an NSSEF Fellowship from the DoD.

Abstract

original image

Bimetallic nanoparticles: Au–Ag core–shell heterometallic nanorods and icosahedra can be prepared from Au decahedral seed particles using plasmon-mediated synthetic methods and adjusting the pH value of the solution (see picture). This method allows for the preparation of icosahedral nanostructures with an asymmetric metal distribution.

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