Programmable Periodicity of Quantum Dot Arrays with DNA Origami Nanotubes
Nano Letters2010Vol. 10(9), pp. 3367–3372
Citations Over TimeTop 10% of 2010 papers
Hieu Bui, Craig Onodera, Carson Kidwell, YerPeng Tan, Elton Graugnard, Wan Kuang, Jeunghoon Lee, William B. Knowlton, Bernard Yurke, William L. Hughes
Abstract
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.
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