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

Journal Article · · Faraday Discussions
DOI:https://doi.org/10.1039/C6FD00028B· OSTI ID:1348341
 [1];  [2];  [1];  [1];  [2];  [2];  [2]
  1. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Inst. de Ciencia de Materials de Barcelona (ICMAP-CSIC), Catalonia (Spain)

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725; FG02-09ER46554
OSTI ID:
1348341
Alternate ID(s):
OSTI ID: 1597763
Journal Information:
Faraday Discussions, Vol. 191; ISSN 1359-6640
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (5)

Janus plasmonic–magnetic gold–iron oxide nanoparticles as contrast agents for multimodal imaging journal January 2017
Optical near-field mapping of plasmonic nanostructures prepared by nanosphere lithography journal January 2018
Nanoparticle Functionalization and Its Potentials for Molecular Imaging journal December 2016
Hybrid magnetite–gold nanoparticles as bifunctional magnetic–plasmonic systems: three representative cases journal January 2017
Gold-decorated magnetic nanoparticles design for hyperthermia applications and as a potential platform for their surface-functionalization journal March 2019

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