COLL 167 |
| A novel synthetic approach was successfully demonstrated as the efficient fabrication of Janus particles. Instead of utilizing two-dimensional plane surfaces, one-dimensional polymer fibers provided even more interfacial area to confine or encapsulate zero-dimensional colloids. A polymer-based electrospinning technique capable of making polymeric fiber mats with desired composites was employed to produce substrates with high surface-to-volume ratio. Silica colloids were adsorbed on the surface of polymer fibers, followed by the thermally-induced embedment under the precise temperature manipulation. Hemispheric surface modification of embedded silica colloids was then conducted by silanization with (3-aminopropyl)trimethoxysilane. Uniform functionalization of Janus particles were further confirmed by the attachment of gold nanoparticles onto the amino-enriched hemispheric surfaces. Fabrication and characterization of Janus particles were discussed. |
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Fundamental Research in Colloid and Surface Chemistry
6:00 PM-8:00 PM, Monday, August 20, 2007 BCEC -- East Registration, Poster
Division of Colloid & Surface Chemistry |