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Issue 38, 2012
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Synthesis and study of Prussian blue type nanoparticles in an alginate matrix

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Abstract

A new approach for the synthesis of Prussian blue type nanoparticles containing nanocomposites in the form of beads or films, as well as their corresponding aqueous colloids, was developed by using a water-soluble alginate matrix as a template and as a stabilizing agent. This method consists of the step-by-step building of a cyanometallate network in the pores of Mn+/alginate ionotropic gels in order to obtain a large range of nanocomposites containing cyano-bridged coordination polymer nanoparticles Mn+/[M′(CN)m]3−/alginate (where Mn+ = Ni2+, Cu2+, Mn2+, Fe2+, Eu3+ and M′ = Fe3+, Cr3+ (m = 6), Mo5+ (m = 8)). The nanocomposite beads and films, as well as the corresponding aqueous colloidal solutions, were studied by infrared (IR), UV/visible spectroscopy, and transmission electron microscopy (TEM) analyses, which reveal the presence of homogeneously dispersed uniformly sized cyano-bridged coordination polymer nanoparticles of 3–7 nm. These nanocomposite beads and films present superparamagnetic, spin-glass or paramagnetic behaviour depending on the nature of the metal ions used. In addition, the Eu3+-containing nanocomposites are room temperature optically active emitters displaying a characteristic 5D07F0–4 transition.

Graphical abstract: Synthesis and study of Prussian blue type nanoparticles in an alginate matrix

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Publication details

The article was received on 04 Jun 2012, accepted on 19 Jul 2012 and first published on 02 Aug 2012


Article type: Paper
DOI: 10.1039/C2JM33585A
Citation: J. Mater. Chem., 2012,22, 20232-20242
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    Synthesis and study of Prussian blue type nanoparticles in an alginate matrix

    A. Tokarev, P. Agulhon, J. Long, F. Quignard, M. Robitzer, R. A. S. Ferreira, L. D. Carlos, J. Larionova, C. Guérin and Y. Guari, J. Mater. Chem., 2012, 22, 20232
    DOI: 10.1039/C2JM33585A

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