Binary heterogeneous superlattices assembled from quantum dots and gold nanoparticles with DNA

Dazhi Sun; Oleg Gang

doi:10.1021/ja111542t

Binary heterogeneous superlattices assembled from quantum dots and gold nanoparticles with DNA

J Am Chem Soc. 2011 Apr 13;133(14):5252-4. doi: 10.1021/ja111542t. Epub 2011 Mar 22.

Authors

Dazhi Sun¹, Oleg Gang

Affiliation

¹ Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA.

PMID: 21425848
DOI: 10.1021/ja111542t

Abstract

Controllable assembly of three-dimensional (3D) superlattices composed of different types of nanoscale objects opens new opportunities for material fabrication. Herein we show the successful assembly of heterogeneous 3D structures from gold nanoparticles (AuNPs) and quantum dots (QDs) using DNA encoding. By applying synchrotron-based small-angle X-ray scattering, we found that AuNPs and QDs are positioned in a body-centered cubic lattice, while each particle type, AuNP and QD, is arranged in a simple-cubic manner. Our studies demonstrate a route for assembly of integrated heterogeneous 3D structures from different nano-objects by DNA-encoded interactions.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

DNA / chemistry*
DNA, Single-Stranded / chemistry
Gold / chemistry*
Metal Nanoparticles / chemistry*
Models, Molecular
Molecular Conformation
Nucleic Acid Hybridization
Particle Size
Quantum Dots*

Substances

DNA, Single-Stranded
Gold
DNA