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Nano Research 2015, 8(12): 4007-4023 https://doi.org/10.1007/s12274-015-0903-y
Research Article | Issue | Published: 03 November 2015

Laser generation of iron-doped silver nanotruffles with magnetic and plasmonic properties

Show Author's Information Vincenzo Amendola1( ),  Stefano Scaramuzza1,  Stefano Agnoli1,  Gaetano Granozzi1,  Moreno Meneghetti1,  Giulio Campo2,  Valentina Bonanni2,  Francesco Pineider2,  Claudio Sangregorio2,3,  Paolo Ghigna4,  Stefano Polizzi5,  Piero Riello5,  Stefania Fiameni6,  Luca Nodari6
Department of Chemical SciencesUniversità di PadovaPadovaI-35131Italy
Department of ChemistryUniversity of Florence & INSTMFlorenceI-50019Italy
CCOM-CNRSesto FiorentinoFlorenceI-50019Italy
Department of ChemistryUniversità di PaviaPaviaI-27100Italy
Department of Molecular Sciences and NanosystemsUniversità Ca' Foscari Venezia and INSTM UdR VeneziaVenezia-MestreI-30172Italy
CNR–IENIPadovaI-35127Italy
Keywords:
laser ablation, silver nanoparticles, iron nanoparticles, laser ablation synthesis in solution (LASiS) nanoalloys
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Amendola V, Scaramuzza S, Agnoli S, et al. Laser generation of iron-doped silver nanotruffles with magnetic and plasmonic properties. Nano Research, 2015, 8(12): 4007-4023. https://doi.org/10.1007/s12274-015-0903-y
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Abstract Full text Electronic supplementary material About this article

A frontier topic in nanotechnology is the realization of multifunctional nanoparticles (NPs) via the appropriate combination of different elements of the periodic table. The coexistence of Fe and Ag in the same nanostructure, for instance, is interesting for nanophotonics, nanomedicine, and catalysis. However, alloying of Fe and Ag is inhibited for thermodynamic reasons. Here, we describe the synthesis of Fe-doped Ag NPs via laser ablation in liquid solution, bypassing thermodynamics constraints. These NPs have an innovative structure consisting of a scaffold of face-centered cubic metal Ag alternating with disordered Ag–Fe alloy domains, all arranged in a truffle-like morphology. The Fe–Ag NPs exhibit the plasmonic properties of Ag and the magnetic response of Fe-containing phases, and the surface of the Fe–Ag NPs can be functionalized in one step with thiolated molecules. Taking advantage of the multiple properties of Fe–Ag NPs, the magnetophoretic amplification of plasmonic properties is demonstrated with proof-of-concept surface-enhanced Raman scattering and photothermal heating experiments. The synthetic approach is of general applicability and virtually permits the preparation of a large variety of multi-element NPs in one step.


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Electronic supplementary material
About this article

Laser generation of iron-doped silver nanotruffles with magnetic and plasmonic properties

Show Author's information Vincenzo Amendola1( ), Stefano Scaramuzza1, Stefano Agnoli1, Gaetano Granozzi1, Moreno Meneghetti1, Giulio Campo2, Valentina Bonanni2, Francesco Pineider2, Claudio Sangregorio2,3, Paolo Ghigna4, Stefano Polizzi5, Piero Riello5, Stefania Fiameni6, Luca Nodari6
Department of Chemical SciencesUniversità di PadovaPadovaI-35131Italy
Department of ChemistryUniversity of Florence & INSTMFlorenceI-50019Italy
CCOM-CNRSesto FiorentinoFlorenceI-50019Italy
Department of ChemistryUniversità di PaviaPaviaI-27100Italy
Department of Molecular Sciences and NanosystemsUniversità Ca' Foscari Venezia and INSTM UdR VeneziaVenezia-MestreI-30172Italy
CNR–IENIPadovaI-35127Italy

Abstract

A frontier topic in nanotechnology is the realization of multifunctional nanoparticles (NPs) via the appropriate combination of different elements of the periodic table. The coexistence of Fe and Ag in the same nanostructure, for instance, is interesting for nanophotonics, nanomedicine, and catalysis. However, alloying of Fe and Ag is inhibited for thermodynamic reasons. Here, we describe the synthesis of Fe-doped Ag NPs via laser ablation in liquid solution, bypassing thermodynamics constraints. These NPs have an innovative structure consisting of a scaffold of face-centered cubic metal Ag alternating with disordered Ag–Fe alloy domains, all arranged in a truffle-like morphology. The Fe–Ag NPs exhibit the plasmonic properties of Ag and the magnetic response of Fe-containing phases, and the surface of the Fe–Ag NPs can be functionalized in one step with thiolated molecules. Taking advantage of the multiple properties of Fe–Ag NPs, the magnetophoretic amplification of plasmonic properties is demonstrated with proof-of-concept surface-enhanced Raman scattering and photothermal heating experiments. The synthetic approach is of general applicability and virtually permits the preparation of a large variety of multi-element NPs in one step.

Keywords: laser ablation, silver nanoparticles, iron nanoparticles, laser ablation synthesis in solution (LASiS) nanoalloys

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Publication history
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Acknowledgements

Publication history

Received: 10 July 2015
Revised: 14 September 2015
Accepted: 22 September 2015
Published: 03 November 2015
Issue date: December 2015

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015

Acknowledgements

Acknowledgements

Authors acknowledge Prof. A. Martucci for useful discussions. Financial support from University of Padova (PRAT no. CPDA114097/11 and Progetto Strategico STPD11RYPT_001) and MIUR (PRIN MULTINANOITA no. 2010JMAZML_001) is gratefully acknowledged.

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