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Issue 16, 2014
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Synthesis and plasmonic properties of monodisperse Au–Ag alloy nanoparticles of different compositions from a single-source organometallic precursor

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Abstract

Monodisperse Au–Ag alloy nanoparticles of different compositions are prepared through the mild decomposition of the bimetallic precursor [Au2Ag2(C6F5)4(OEt2)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.

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

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Article information


Submitted
28 Dec 2013
Accepted
10 Feb 2014
First published
18 Mar 2014

J. Mater. Chem. C, 2014,2, 2975-2984
Article type
Paper

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

J. Crespo, A. Falqui, J. García-Barrasa, J. M. López-de-Luzuriaga, M. Monge, M. E. Olmos, M. Rodríguez-Castillo, M. Sestu and K. Soulantica, J. Mater. Chem. C, 2014, 2, 2975
DOI: 10.1039/C3TC32577F

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