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research article
Magnetic Decoupling of Surface Fe3+ in Magnetite Nanoparticles upon Nitrocatechol-Anchored Dispersant Binding
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.
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Amstad_2011_Chemistry.pdf
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