April 6, 2005 FRONTIERS IN MATERIALS SCIENCE
VINSE COLLOQUIUM SERIES
Dr. Todd Emrick
Assistant Professor of Polymer Science and Engineering
University of Massachusetts Amherst
"Nanoparticles and Amphiphilic Grapt Copolymers for Interfacial Assembly and Encapsulation" Abstract. This presentation will focus on the synthesis of semiconductor nanoparticles and polymer materials that are tailored for interfacial activity, and that can be used in encapsulation when assemblies are performed at the fluid-fluid interface. While semiconductor nanoparticles are particularly interesting for their electronic and photophysical properties, their solution and solid-state properties rely heavily on the nature of the ligand coverage. Appropriate tailoring of this ligand coverage can be utilized for the controlled integration of nanoparticles into polymer materials and fluids. In addition, the tailoring of conventional polymer materials, such as polyolefins and polyesters, with grafted functionality can provide new polymer materials with properties that promote interfacial segregation in fluids, and lead to encapsulants of either hydrophobic or hydrophilic materials, depending on the nature of the assembly.
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