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Surface Charge Controlled Magnetic Nanoparticles with Grafting of Poly(4-vinylpyridine)

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Abstract:

Poly(4-vinylpyridine)-grafted magnetic nanoparticles were prepared by the "graft to" method. Surface-modified magnetic particles are covered with a hydrophobic layer because it can be dispersed in organic solvents such as methanol, toluene, benzene, and chloroform, but not in water. Surface charge control with magnetic nanoparticles of various isoelectric point was achieved by quaternization of pyridyl groups, and the positively charged particles can be dispersed in water within a wide range of pH.

Keywords: E-POTENTIAL; MAGHEMITE; POLY(4-VINYLPYRIDINE); POLYMER GRAFTING; QUATERNIZATION; SILANE COUPLING; SURFACE MODIFICATION; TELOMERIZATION

Document Type: Review Article

DOI: https://doi.org/10.1166/jnn.2005.069

Publication date: 2005-03-01

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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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