COLL 342 |
| With a growing recognition of nanoparticles as building blocks in nature and synthetic mesostructures, the influence of nanoparticle characteristics in the assembly and disassembly of composites has attracted considerable attention in the last couple of years. In this contribution it is demonstrated that nanoparticle size and size distribution can be used to control the assembly of composites and that, because of the discrete nature of nanoparticles, the composites can be disassembled into a rich variety of structural building units. Understanding of the fundamental design criteria enables precise placement of nanoparticles and thus creates compositionally heterogeneous, functional mesostructured composites. Inversely, employing retrosynthetic concepts from organic chemistry in materials chemistry, nanoparticle based composites can be disassembled into complex, well-defined structural units. It is expected that application of size-dependent segregation and disassembly will enable materials discovery and improved structure control at the near-molecular level, and that these phenomena can be generalized to a wide range of nanoparticle-derived mesostructured composites. |
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Polymer-Nanoparticle Systems: Theory, Simulation, Experiments
2:00 PM-5:00 PM, Tuesday, April 8, 2008 Morial Convention Center -- Rm. 227, Oral
Division of Colloid & Surface Chemistry |