Volume 191, 2016

Gold nanotriangles decorated with superparamagnetic iron oxide nanoparticles: a compositional and microstructural study

Abstract

The combination of iron oxide and gold in a single nanoparticle results in both magnetic and plasmonic properties that can stimulate novel applications in bio-sensing, medical imaging, or therapeutics. Microwave assisted heating allows the fabrication of multi-component, multi-functional nanostructures by promoting selective heating at desired sites. Recently, we reported a microwave-assisted polyol route yielding gold nanotriangles decorated with iron oxide nanoparticles. Here, we present an in-depth microstructural and compositional characterization of the system using scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS). A method to remove the iron oxide nanoparticles from the gold nanocrystals and some insights on crystal nucleation and growth mechanisms are also provided.

Associated articles

Article information

Article type
Paper
Submitted
29 Feb 2016
Accepted
11 Mar 2016
First published
11 Mar 2016

Faraday Discuss., 2016,191, 215-227

Gold nanotriangles decorated with superparamagnetic iron oxide nanoparticles: a compositional and microstructural study

J. A. Hachtel, S. Yu, A. R. Lupini, S. T. Pantelides, M. Gich, A. Laromaine and A. Roig, Faraday Discuss., 2016, 191, 215 DOI: 10.1039/C6FD00028B

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