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

Hachtel, J. A.; Yu, S.; Lupini, A. R.; Pantelides, S. T.; Gich, M.; Laromaine, A.; Roig, A.

doi:10.1039/C6FD00028B

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

Journal Article · Fri Mar 11 00:00:00 EST 2016 · Faraday Discussions

DOI:https://doi.org/10.1039/C6FD00028B· OSTI ID:1348341

Hachtel, J. A. ^[1]; Yu, S. ^[2]; Lupini, A. R. ^[1]; Pantelides, S. T. ^[1]; Gich, M. ^[2]; Laromaine, A. ^[2]; Roig, A. ^[2]

Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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 by using scanning transmission electron microscopy (STEM) and electron energy loss (EELS) spectroscopy. A method to remove the iron oxide nanoparticles from the gold nanocrystals and some insights on crystal nucleation and growth mechanisms are also provided.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)

Sponsoring Organization:: USDOE; 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, Journal Name: Faraday Discussions Vol. 191; ISSN 1359-6640; ISSN FDISE6

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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