کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1802784 1024605 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stabilization and controlled association of superparamagnetic nanoparticles using block copolymers
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Stabilization and controlled association of superparamagnetic nanoparticles using block copolymers
چکیده انگلیسی

Mixing in aqueous solutions polyelectrolyte-neutral block copolymers with oppositely charged species, spontaneously forms stable core–shell complexes, which are electrostatically driven. We report here on the structural and orientational properties of such mixed magnetic nanoclusters made of magnetic iron oxide nanoparticles (MNPs) and polyelectrolyte-neutral block copolymers. Small angle neutron scattering and transmission electron microscopy experiments allows to probe the inner-core nanoparticle organization, leading to an average interparticle distance and confirming the hierarchical internal structure of the clusters. Thanks to the MNP optical anisotropy, we also probe the under-magnetic field orientational properties of the core–shell clusters and their dynamical rotational relaxation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 7, April 2009, Pages 667–670
نویسندگان
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