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Volume 191, 2016
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Synthesis of Janus plasmonic–magnetic, star–sphere nanoparticles, and their application in SERS detection

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Abstract

Multicomponent nanoparticles are of particular interest due to a unique combination of properties at the nanoscale, which make them suitable for a wide variety of applications. Among them, Janus nanoparticles, presenting two distinct surface regions, can lead to specific interactions with interfaces, biomolecules, membranes etc. We report the synthesis of Janus nanoparticles comprising iron oxide nanospheres and gold nanostars, through two consecutive seed-mediated-growth steps. Electron tomography combining HAADF-STEM and EDX mapping has been performed to evaluate the spatial distribution of the two components of the nanoparticle, showing their clear separation in a Janus morphology. Additionally, SERS measurements assisted by magnetic separation were carried out to assess the application of combined plasmonic and magnetic properties for sensing.

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Publication details

The article was received on 06 Feb 2016, accepted on 02 Mar 2016 and first published on 02 Mar 2016


Article type: Paper
DOI: 10.1039/C6FD00012F
Citation: Faraday Discuss., 2016,191, 47-59
  • Open access: Creative Commons BY license
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    Synthesis of Janus plasmonic–magnetic, star–sphere nanoparticles, and their application in SERS detection

    J. Reguera, D. Jiménez de Aberasturi, N. Winckelmans, J. Langer, S. Bals and L. M. Liz-Marzán, Faraday Discuss., 2016, 191, 47
    DOI: 10.1039/C6FD00012F

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