Coexistence of plasmonic and magnetic properties in Au89Fe 11 nanoalloys

Vincenzo Amendola; Moreno Meneghetti; Osman Bakr; Pietro Riello; Stefano Polizzi; Dalaver H. Anjum; Stefania Fiameni; Paolo Arosio; Tomas Orlando; César De Julian Fernandez; Francesco Pineider; Claudio Sangregorio; Alessandro Lascialfari

doi:10.1039/c3nr01119d

Coexistence of plasmonic and magnetic properties in Au89Fe 11 nanoalloys

Vincenzo Amendola, Moreno Meneghetti, Osman Bakr, Pietro Riello, Stefano Polizzi, Dalaver H. Anjum, Stefania Fiameni, Paolo Arosio, Tomas Orlando, César De Julian Fernandez, Francesco Pineider, Claudio Sangregorio, Alessandro Lascialfari

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98 Scopus citations

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 Au 89Fe11 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. © 2013 The Royal Society of Chemistry.

Original language	English (US)
Pages (from-to)	5611
Journal	Nanoscale
Volume	5
Issue number	12
DOIs	https://doi.org/10.1039/c3nr01119d
State	Published - 2013

ASJC Scopus subject areas

General Materials Science

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@article{8509728b0bfd4da5bbb68c1f54cc61b2,

title = "Coexistence of plasmonic and magnetic properties in Au89Fe 11 nanoalloys",

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 Au 89Fe11 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. {\textcopyright} 2013 The Royal Society of Chemistry.",

author = "Vincenzo Amendola and Moreno Meneghetti and Osman Bakr and Pietro Riello and Stefano Polizzi and Anjum, {Dalaver H.} and Stefania Fiameni and Paolo Arosio and Tomas Orlando and {De Julian Fernandez}, C{\'e}sar and Francesco Pineider and Claudio Sangregorio and Alessandro Lascialfari",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was supported by the University of Padova grant (PRAT) no. CPDA114097/11. CJF, CS, FP, AL and PA acknowledge Fondazione Cariplo (Project no. 2010-0612) and Italian MIUR (FIRB Project {"}RINAME{"} No. RBAP114AMK). FP acknowledges {"}Rete ItalNanoNet{"} (Pr. no. RBPR05JH2P).",

year = "2013",

doi = "10.1039/c3nr01119d",

language = "English (US)",

volume = "5",

pages = "5611",

journal = "Nanoscale",

issn = "2040-3364",

publisher = "Royal Society of Chemistry",

number = "12",

}

TY - JOUR

T1 - Coexistence of plasmonic and magnetic properties in Au89Fe 11 nanoalloys

AU - Amendola, Vincenzo

AU - Meneghetti, Moreno

AU - Bakr, Osman

AU - Riello, Pietro

AU - Polizzi, Stefano

AU - Anjum, Dalaver H.

AU - Fiameni, Stefania

AU - Arosio, Paolo

AU - Orlando, Tomas

AU - De Julian Fernandez, César

AU - Pineider, Francesco

AU - Sangregorio, Claudio

AU - Lascialfari, Alessandro

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was supported by the University of Padova grant (PRAT) no. CPDA114097/11. CJF, CS, FP, AL and PA acknowledge Fondazione Cariplo (Project no. 2010-0612) and Italian MIUR (FIRB Project "RINAME" No. RBAP114AMK). FP acknowledges "Rete ItalNanoNet" (Pr. no. RBPR05JH2P).

PY - 2013

Y1 - 2013

N2 - 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 Au 89Fe11 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. © 2013 The Royal Society of Chemistry.

AB - 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 Au 89Fe11 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. © 2013 The Royal Society of Chemistry.

UR - http://hdl.handle.net/10754/562508

UR - http://xlink.rsc.org/?DOI=c3nr01119d

UR - http://www.scopus.com/inward/record.url?scp=84878710837&partnerID=8YFLogxK

U2 - 10.1039/c3nr01119d

DO - 10.1039/c3nr01119d

M3 - Article

C2 - 23685617

SN - 2040-3364

VL - 5

SP - 5611

JO - Nanoscale

JF - Nanoscale

IS - 12

ER -

Coexistence of plasmonic and magnetic properties in Au89Fe 11 nanoalloys

Abstract

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