Magnetic Decoupling of Surface Fe3+ in Magnetite Nanoparticles upon Nitrocatechol-Anchored Dispersant Binding
Amstad, Esther; Fischer, Hakon; Gehring, Andreas U.; Textor, Marcus; Reimhult, Erik
2011
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Abstract

Bind and distort: NitroDOPA, an anchor shown to irreversibly couple dispersants and functional groups to superparamagnetic Fe 3O 4 nanoparticles, can magnetically decouple Fe 3+ in a nanoparticle surface layer. The strong binding of nitroDOPA distorts the Fe 3+ ligand field. This ESR finding sheds light on an important binding mechanism of anchors used for nanoparticle surface modification (see graphic). Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Details

Title Magnetic Decoupling of Surface Fe3+ in Magnetite Nanoparticles upon Nitrocatechol-Anchored Dispersant Binding
Author(s) Amstad, Esther ; Fischer, Hakon ; Gehring, Andreas U. ; Textor, Marcus ; Reimhult, Erik
Published in Chemistry-a European Journal
Volume 17
Pages 7396-7398
Date 2011
Publisher Wiley-Blackwell
ISSN 0947-6539
DOI https://doi.org/10.1002/chem.201003504
Laboratories SMAL
Record Appears in Scientific production and competences > STI - School of Engineering > IMX - Institute of Materials > SMAL - Soft Materials Laboratory
Peer-reviewed publications
Work outside EPFL
Journal Articles
Published
Record creation date 2015-04-09

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