Synthesis and plasmonic properties of monodisperse Au-Ag alloy nanoparticles of different compositions from a single-source organometallic precursor

  1. Crespo, J. 1
  2. Falqui, A. 23
  3. García-Barrasa, J. 1
  4. López-De-Luzuriaga, J.M. 1
  5. Monge, M. 1
  6. Olmos, M.E. 1
  7. Rodríguez-Castillo, M. 4
  8. Sestu, Matteo . 2
  9. Soulantica, K. 4
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 University of Cagliari
    info

    University of Cagliari

    Cagliari, Italia

    ROR https://ror.org/003109y17

  3. 3 Italian Institute of Technology
    info

    Italian Institute of Technology

    Génova, Italia

    ROR https://ror.org/042t93s57

  4. 4 Université de Toulouse
    info

    Université de Toulouse

    Tolosa, Francia

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Zeitschrift:
Journal of Materials Chemistry C . Materials for optical, magnetic and electronic devices

ISSN: 2050-7526

Datum der Publikation: 2014

Ausgabe: 2

Nummer: 16

Seiten: 2975-2984

Art: Artikel

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DOI: 10.1039/C3TC32577F SCOPUS: 2-s2.0-84897127778 WoS: WOS:000334123800019 GOOGLE SCHOLAR

Andere Publikationen in: Journal of Materials Chemistry C . Materials for optical, magnetic and electronic devices

Institutionelles Repository: lockOpen Access Editor

Zusammenfassung

Monodisperse Au-Ag alloy nanoparticles of different compositions are prepared through the mild decomposition of the bimetallic precursor [Au 2Ag2(C6F5)4(OEt 2)2]n in an organic solvent using hexadecylamine (HDA) as a stabilizing ligand. The effects of different reaction parameters on the size and composition of the nanoparticles, such as the metal:HDA ratio, the use of H2 reducing gas or the solvent (toluene, THF or mesitylene), have been studied through TEM, HRTEM, EDS, UV/Vis and 19F NMR spectroscopy. The localized surface plasmon resonance (LSPR) displayed by the spherical Au-Ag nanoparticles can be tuned as a function of the metal composition. © 2014 the Partner Organisations.