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Issue 91, 2016
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Size selectable nanoparticle assemblies with magnetic anisotropy tunable across the superparamagnetic to ferromagnetic range

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Abstract

We present a novel approach for the preparation of magnetic nanoparticle clusters of controlled size and selectable magnetic anisotropy, which provides materials with properties selectable for biomedical applications and as components in magnetically responsive nanocomposites. The assembly process is based on a ligand desorption strategy and allows selection of nanoparticle size and temporal control over final cluster size. Detailed NMR analysis of the suspensions pinpoints the role of particle size in controlling the interparticle interactions, within the clusters, which effectively determine the anisotropy. Colloidal interaction modelling confirms this interpretation and provides a means to predict both colloidal stability and magnetic anisotropy.

Graphical abstract: Size selectable nanoparticle assemblies with magnetic anisotropy tunable across the superparamagnetic to ferromagnetic range

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Publication details

The article was received on 16 Jul 2016, accepted on 19 Sep 2016 and first published on 19 Sep 2016


Article type: Communication
DOI: 10.1039/C6CC05871J
Citation: Chem. Commun., 2016,52, 13337-13340
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    Size selectable nanoparticle assemblies with magnetic anisotropy tunable across the superparamagnetic to ferromagnetic range

    J. K. Stolarczyk, C. J. Meledandri, S. P. Clarke and D. F. Brougham, Chem. Commun., 2016, 52, 13337
    DOI: 10.1039/C6CC05871J

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