Discrete Nanostructures of Quantum Dots/Au with DNA

Aihua Fu,† Christine M. Micheel,†‡ Jennifer Cha,†§ Hauyee Chang,† Haw Yang,† and A. Paul Alivisatos*†‡
Department of Chemistry, University of California, Berkeley, and Materials Science and Physical Biosciences Divisions, Lawrence Berkeley National Laboratory, Berkeley, California 94720
J. Am. Chem. Soc., 2004, 126 (35), pp 10832–10833
DOI: 10.1021/ja046747x
Publication Date (Web): August 13, 2004
Copyright © 2004 American Chemical Society
†

 University of California, Berkeley.

,
‡

 Materials Science Division, Lawrence Berkeley National Laboratory.

,
§

 Present address:  IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120.

,

 Physical Biosciences Division, Lawrence Berkeley National Laboratory.

,
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, alivis@uclink4.berkeley.edu

Abstract

Abstract Image

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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History

  • Published In Issue September 08, 2004
  • Received June 2, 2004

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