POLY 517 |
| We describe a simple and versatile protocol to prepare multifunctional nanostructures by encapsulation of different nanoparticles in amphiphilic block copolymer micelles. This method permits simultaneous packaging of different functionalities within a nano-sized copolymer micellar container. We have demonstrated the co-encapsulation of metal (Au), magnetic (r-Fe2O3, Fe3O4), and semiconductor (CdSe/ZnS) nanoparticles in different combinations to form multicomponent micelles that retain the precursor particles' distinct properties. Because these multifunctional hybrid nanostructures spontaneously assemble from solution by simultaneous desolvation of nanoparticles and amphiphilic block copolymer components, we anticipate that this can be used as a general protocol for preparing multifunctional nanostructures without explicit multi-material synthesis or surface functionalization of nanoparticles. |
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Nanoparticles and Microparticles: Synthesis and Applications
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Division of Polymer Chemistry |