Superparamagnetic Nanocomposites Templated with Pyrazole-Containing Diblock Copolymers

Polymers

Sanchita Biswas²  Kevin D. Belfield²  Ritesh K. Das¹  Siddhartha Ghosh¹ 

[1] Department of Physics, University of Florida, Gainesville, FL 32611, USA;Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816, USA;

关键词: block copolymer;    polymeric nanocomposite;    maghemite;    ROMP;    chelating ligand;   

DOI  :  10.3390/polym4021211

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.