Binary Heterogeneous Superlattices Assembled from Quantum Dots and Gold Nanoparticles with DNA

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• 作者：Dazhi Sun ; Oleg Gang
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：April 13, 2011
• 年：2011
• 卷：133
• 期：14
• 页码：5252-5254
• 全文大小：696K
• 年卷期：v.133,no.14(April 13, 2011)
• ISSN：1520-5126

文摘

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.