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Polymer-Coated Magnetic Nanoparticles: Surface Modification and End-Functionalization

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Abstract:

ATRP (atom transfer radical polymerization) approach was employed to synthesis polymer-coated magnetite nanoparticles. These particles had an average diameter of 7.1 nm and a narrow size distribution. Characterization was performed using various techniques like Transmission Electron Microscopy (TEM), Ultraviolet-Visible spectroscopy (UV-vis), Fourier Transform Infrared spectroscopy (FTIR), Atomic Force Microscopy (AFM), and Vibrating Sample Magnetometry (VSM). The challenge was to obtain a thin shell and discrete particles in an unagglomerated state. Several factors like presence/choice of solvent, monomer-to-initiator concentration and structure of initiator were found to play a key role in this study. Attempts have been made to tailor the polymer shells by end-functionalization. This work has an enormous biomedical application potential.

Keywords: ATOM TRANSFER RADICAL POLYMERIZATION; MAGNETITE NANOPARTICLE; POLYSTYRENE; SURFACE MODIFICATION AND END-FUNCTIONALIZATION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2006.534

Publication date: August 1, 2006

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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