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

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.

SUBMITTER: Mastroianni AJ

PROVIDER: S-EPMC2767249 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature

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

Mastroianni Alexander J AJ Claridge Shelley A SA Alivisatos A Paul AP

Journal of the American Chemical Society 20090601 24

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 de ...[more]

PMID: 19331419

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