Programmable Periodicity of Quantum Dot Arrays with DNA Origami Nanotubes
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- 作者：Hieu Bui ; Craig Onodera ; Carson Kidwell ; YerPeng Tan ; Elton Graugnard ; Wan Kuang ; Jeunghoon Lee ; William B. Knowlton ; Bernard Yurke ; William L. Hughes
- 刊名：Nano Letters
- 出版年：2010
- 出版时间：September 8, 2010
- 年：2010
- 卷：10
- 期：9
- 页码：3367-3372
- 全文大小：464K
- 年卷期：v.10,no.9(September 8, 2010)
- ISSN：1530-6992
文摘
To fabricate quantum dot arrays with programmable periodicity, functionalized DNA origami nanotubes were developed. Selected DNA staple strands were biotin-labeled to form periodic binding sites for streptavidin-conjugated quantum dots. Successful formation of arrays with periods of 43 and 71 nm demonstrates precise, programmable, large-scale nanoparticle patterning; however, limitations in array periodicity were also observed. Statistical analysis of AFM images revealed evidence for steric hindrance or site bridging that limited the minimum array periodicity.