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Programmable periodicity of quantum dot arrays with DNA origami nanotubes.

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.

SUBMITTER: Bui H

PROVIDER: S-EPMC2935673 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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Programmable periodicity of quantum dot arrays with DNA origami nanotubes.

Bui Hieu H Bui Hieu H Onodera Craig C Kidwell Carson C Tan YerPeng Y Graugnard Elton E Kuang Wan W Lee Jeunghoon J Knowlton William B WB Yurke Bernard B Hughes William L WL

Nano letters 20100901 9

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 hind ...[more]

PMID: 20681601

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