ORGN 313 |
| Eugene R. Zubarev and Jun Xu. Department of Materials Science and Engineering, Iowa State University, 3271 Gilman Hall, Ames, IA 50011 |
| If methods were found to attach covalently a nanoparticle (NP) at the junction point connecting hydrophilic and hydrophobic blocks of an amphiphile, then the formation of micelles in selective solvents would confine NPs at the core-corona interface. This would provide a unique opportunity to assemble NPs into discrete well-defined arrays. Unfortunately, such hybrid structures are not known today. On the other hand, the spatial confinement of nonmetallic junction points takes place upon self-assembly of heteroarm star amphiphiles into supermicelles, as our previous study has shown. Therefore, a mere substitution of an organic core of a self-assembling heteroarm star by an NP may be used for their organization into different morphologies. Here we describe the synthesis of NPs with amphiphilic shells composed of Y-shaped fragments covalently attached to gold nanoparticles. Most importantly, we report on the first observation of amphiphilicity-driven self-assembly of NPs in selective solvents. |
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Molecular Recognition and Materials
8:00 AM-12:00 PM, Tuesday, August 24, 2004 Pennsylvania Convention Center -- 201B, Oral
Division of Organic Chemistry |