Chemical Transformations in Nanocrystals

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Paul Alivisatos, Chancellor's Professor of Chemistry and Materials Science, UC Berkeley

Chemical Transformations in Nanocrystals

April 3, 2006

4:00 P.M.

Paul Alivisatos

Beckman Institute Auditorium
California Institute of Technology

Paul Alivisatos, University of California, Berkeley

Nanocrystals with tightly controlled size distribution and well-defined shapes (spheres, disks, rods, ∑) can now be prepared quite readily. These nanocrystals can, in turn, be transformed chemically from one material to another, and these transformations will be the subject of the talk. Chemical reactions in nanocrystals can proceed by simplified kinetics compared to bulk solids; further, the products can be spatially complex arrangements of connected materials. In this sense, the nanocrystal can be an important model system for understanding chemical reactions in the solid state more generally. Examples covered will be the formation of hollow nanocrystals through the nanoscale Kirkendall effect, cation exchange reactions in nanocrystals, and nanocrystal splitting reactions.

Host: Cody Nash

 

Companion Tutorial: Biological Imaging Applications of Nanocrystals

Tuesday, April 4, 2006 

10:30 am - 11:30 am, 153 Noyes