Issue 7, 2014

Direct amine-functionalisation of γ-Fe2O3 nanoparticles

Abstract

A novel and simple preparation of amine-modified γ-Fe2O3 nanoparticles is described. The presence of amine groups on the surface, instead of hydroxyl groups, will allow conjugation of biologically active molecules to the iron oxide nanoparticles without the need for a size increasing silica shell. Furthermore, the outer amine-layer increases the temperature of the γ-Fe2O3 to α-Fe2O3 structural transition in a similar way to previously reported cationic substitutions. This may suggest the formation of an oxide–nitride outer layer. Re-dispersion of the amine-modified γ-Fe2O3 nanoparticles led to the preparation of stable ferrofluids.

Graphical abstract: Direct amine-functionalisation of γ-Fe2O3 nanoparticles

Article information

Article type
Paper
Submitted
29 Aug 2013
Accepted
25 Nov 2013
First published
26 Nov 2013
This article is Open Access
Creative Commons BY license

Dalton Trans., 2014,43, 2948-2952

Author version available

Direct amine-functionalisation of γ-Fe2O3 nanoparticles

V. Rocher, J. Manerova, M. Kinnear, D. J. Evans and M. G. Francesconi, Dalton Trans., 2014, 43, 2948 DOI: 10.1039/C3DT52386A

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