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Polymers 2012, 4(2), 1211-1225; doi:10.3390/polym4021211

Superparamagnetic Nanocomposites Templated with Pyrazole-Containing Diblock Copolymers

1,* , 2
1 Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816, USA 2 Department of Physics, University of Florida, Gainesville, FL 32611, USA
* Author to whom correspondence should be addressed.
Received: 19 March 2012 / Revised: 26 April 2012 / Accepted: 14 May 2012 / Published: 31 May 2012
(This article belongs to the Special Issue Polymers for Bioimaging)
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Monodisperse maghemite nanoparticles, templated in novel, well-defined pyrazole-containing norbornene-based block copolymers, provided a superparamagnetic nanocomposite with high saturation magnetization at room temperature under an applied magnetic field. The synthesis of the polymer nanocomposites and physical, morphological, and magnetic chracaterization of the nanocomposites are reported. Micelle-encapsulated superparamagnetic nanocomposites were generated for dispersal in aqueous medium. Their stability in water in the presence of a magnetic field was investigated as was their morphology and cell viability, strongly suggesting the potential of these superparamagnetic polymer-based nanocomposites in certain biomedical imaging and associated applications.
Keywords: block copolymer; polymeric nanocomposite; maghemite; ROMP; chelating ligand block copolymer; polymeric nanocomposite; maghemite; ROMP; chelating ligand
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Biswas, S.; Belfield, K.D.; Das, R.K.; Ghosh, S.; Hebard, A.F. Superparamagnetic Nanocomposites Templated with Pyrazole-Containing Diblock Copolymers. Polymers 2012, 4, 1211-1225.

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