The chemically directed assembly of nanoparticle clusters from superparamagnetic iron-oxide nanoparticles†
Abstract
We describe the controlled synthesis of nanoparticle clusters (NCs) based on the chemically directed assembly of superparamagnetic iron-oxide nanoparticles. The NCs, with their “raspberry-like” shape, have a large effective surface area, uniform size, and contain a large fraction of the magnetic maghemite.