PMSE 295 |
| Self-assembly of block copolymers into ordered domains is a well studied phenomenon. Thin films made from block copolymers can exhibit various morphologies depending on the chain lengths, χN, and annealing conditions. Recently, advances have been made in controlling the location of metallic nanoparticles within specific domains of polymer thin films. Efforts to control the location and orientation of nanoparticles within these composite materials have relied upon favorable interactions between the surface ligands that stabilize the nanoparticles and the block copolymer. We now present new techniques for stabilizing nanoparticles using block copolymers, which also function as ligands for the metallic surface. By modify the nature of the polymer-ligand we can control the surface coverage on the nanoparticles and the location of nanoparticles within polymer thin films. Lastly, we have synthesized di- and tri-block copolymers that incorporate a block which functions as a ligand for metallic nanoparticles. Preliminary investigations into the chemistry between polymer thin films of these ABC block copolymers and unstabilized metallic nanoparticles are reported.
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Joint PMSE/POLY Poster Session
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Polymeric Materials: Science & Engineering |