Assembly of magnetic nanoparticle clusters of controlled geometry and crystallinity

PMSE 142

Tatsushi Isojima, isojima@mit.edu, Su Kyung Suh, sukyung@MIT.EDU, and T. Alan Hatton, tahatton@mit.edu. Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139
Magnetic nanoparticle have been assembled under controlled processing conditions to yield well-defined clusters of different geometries and varying levels of crystallinity. These clusters, with typical dimensions on the order of 50 to 200 nm, can consist of nanoparticle shells around hollow spherical cores, of spherical solid crystalline superlattices, and of extended string-like structures with very high aspect ratios. We describe the overall concepts for the assembly of these structures and provide some initial rationlization for the structures that form based on both transport and thermodynamic considerations.
 

Synthesis and Self-Assembly Approaches to Polymer-Inorganic Hybrid Nanoparticles
8:30 AM-11:50 AM, Tuesday, April 8, 2008 Hilton New Orleans Riverside -- Grand Salon 24, Oral

Division of Polymeric Materials: Science & Engineering

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008