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J Am Chem Soc. 2009 Jun 24;131(24):8455-9. doi: 10.1021/ja808570g.

Pyramidal and chiral groupings of gold nanocrystals assembled using DNA scaffolds.

Author information

1
Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.

Abstract

Nanostructures constructed from metal and semiconductor nanocrystals conjugated to and organized by DNA are an emerging class of materials with collective optical properties. We created discrete pyramids of DNA with gold nanocrystals at the tips. By taking small-angle X-ray scattering measurements from solutions of these pyramids, we confirmed that this pyramidal geometry creates structures which are more rigid in solution than linear DNA. We then took advantage of the tetrahedral symmetry to demonstrate construction of chiral nanostructures.

PMID:
19331419
PMCID:
PMC2767249
DOI:
10.1021/ja808570g
[Indexed for MEDLINE]
Free PMC Article

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