Web Release Date: August 13,
Discrete Nanostructures of Quantum Dots/Au with DNA
and
Department of Chemistry, University of California, Berkeley, and Materials Science and Physical Biosciences Divisions, Lawrence Berkeley National Laboratory, Berkeley, California 94720
Received June 2, 2004
Abstract:
Nanostructures of colloidal CdSe/ZnS core/shell quantum dots (QDs) surrounded by a discrete number of Au nanoparticles were generated via DNA hybridization and purified by gel electrophoresis. Statistics from TEM analysis showed a high yield of designed structures. The distance between Au particles and QD, the number of Au around the central QD, and the size of Au and QD can be adjusted. Rationally designed structures such as these hold great promise for researching the physical interactions between semiconductor and Au nanoparticles and for developing more efficient nanoprobes.
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