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research article

Effects of coating spherical iron oxide nanoparticles

Milosevic, Irena  
•
Motte, Laurence
•
Aoun, Bachir
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2017
Biochimica Et Biophysica Acta-General Subjects

We investigate the effect of several coatings applied in biomedical applications to iron oxide nanoparticles on the size, structure and composition of the particles. The four structural techniques employed - TEM, DLS, VSM, SAXS and EXAFS - show no significant effects of the coatings on the spherical shape of the bare nanoparticles, the average sizes or the local order around the Fe atoms. The NPs coated with hydroxylmethylene bisphosphonate or catechol have a lower proportion of magnetite than the bare and citrated ones, raising the question whether the former are responsible for increasing the valence state of the oxide on the NP surfaces and lowering the overall proportion of magnetite in the particles. VSM measurements show that these two coatings lead to a slightly higher saturation magnetization than the citrate. This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazu and Dr. Federica Migliardo. (C) 2016 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.bbagen.2016.05.016
Web of Science ID

WOS:000390745100014

Author(s)
Milosevic, Irena  
Motte, Laurence
Aoun, Bachir
Li, Tao
Ren, Yang
Sun, Chengjun
Saboungi, Marie-Louise
Date Issued

2017

Publisher

Elsevier Science Bv

Published in
Biochimica Et Biophysica Acta-General Subjects
Volume

1861

Issue

1, part B

Start page

3621

End page

3626

Subjects

Magnetic nanoparticle

•

Coating

•

Valence state

•

Synchrotron X-ray

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
IMX  
Available on Infoscience
February 17, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/134582
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