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Issue 10, 2012
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Polyvinyl alcohol: an efficient fuel for synthesis of superparamagnetic LSMO nanoparticles for biomedical application

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Abstract

La0.7Sr0.3MnO3 (LSMO) nanoparticles have been prepared using glycine and polyvinyl alcohol (PVA) as fuels. Their crystal structure, particle morphology and compositions are characterized using X-ray diffraction, transmission electron microscopy, field-emission electron microscopy and energy dispersive analysis of X-ray. They show a pseudo-cubic perovskite structure. The spherical particle sizes of 30 and 20 nm have been obtained from samples prepared by glycine and PVA respectively. The field cooled (FC) and zero field cooled (ZFC) magnetizations have been recorded from 5 to 375 K at 500 Oe and superparamagnetic blocking temperatures (TB) of 75 and 30 K are obtained from samples prepared by glycine and PVA respectively. Particle size distribution is observed from dynamic light scattering measurements. Dispersion stability of the particles in water is studied by measuring the Zeta potential with varying the pH of the medium from 1 to 12. Under induction heating experiments, a hyperthermia temperature (42–43 °C) is achieved by both the samples (3–6 mg mL−1) at magnetic fields of 167–335 Oe and at a frequency of 267 kHz. The bio-compatibility of the LSMO nanoparticles is studied on the L929 and HeLa cell lines by MTT assay for up to 48 h. The present work reveals the importance of synthesis technique and fuel choice on structural, morphological, magnetic, hyperthermia and biocompatible properties of LSMO and predicts the suitability for biomedical applications.

Graphical abstract: Polyvinyl alcohol: an efficient fuel for synthesis of superparamagnetic LSMO nanoparticles for biomedical application

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Publication details

The article was received on 28 Sep 2011, accepted on 12 Dec 2011 and first published on 25 Jan 2012


Article type: Paper
DOI: 10.1039/C2DT11835A
Dalton Trans., 2012,41, 3060-3071

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    Polyvinyl alcohol: an efficient fuel for synthesis of superparamagnetic LSMO nanoparticles for biomedical application

    N. D. Thorat, K. P. Shinde, S. H. Pawar, K. C. Barick, C. A. Betty and R. S. Ningthoujam, Dalton Trans., 2012, 41, 3060
    DOI: 10.1039/C2DT11835A

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