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Issue 12, 2013

Coexistence of plasmonic and magnetic properties in Au89Fe11 nanoalloys

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Abstract

We describe an environmentally friendly, top-down approach to the synthesis of Au89Fe11 nanoparticles (NPs). The plasmonic response of the gold moiety and the magnetism of the iron moiety coexist in the Au89Fe11 nanoalloy with strong modification compared to single element NPs, revealing a non-linear surface plasmon resonance dependence on the iron fraction and a transition from paramagnetic to a spin-glass state at low temperature. These nanoalloys are accessible to conjugation with thiolated molecules and they are promising contrast agents for magnetic resonance imaging.

Graphical abstract: Coexistence of plasmonic and magnetic properties in Au89Fe11 nanoalloys

Supplementary files

Article information


Submitted
05 Mar 2013
Accepted
14 Apr 2013
First published
23 Apr 2013

Nanoscale, 2013,5, 5611-5619
Article type
Paper

Coexistence of plasmonic and magnetic properties in Au89Fe11 nanoalloys

V. Amendola, M. Meneghetti, O. M. Bakr, P. Riello, S. Polizzi, D. H. Anjum, S. Fiameni, P. Arosio, T. Orlando, C. de Julian Fernandez, F. Pineider, C. Sangregorio and A. Lascialfari, Nanoscale, 2013, 5, 5611 DOI: 10.1039/C3NR01119D

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