Programmable periodicity of quantum dot arrays with DNA origami nanotubes.
Programmable periodicity of quantum dot arrays with DNA origami nanotubes.
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DOI:
10.1021/nl101079u
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发表时间:
2010-09-08
期刊:
影响因子:
10.8
通讯作者:
Hughes WL
中科院分区:
文献类型:
--
作者:
Bui H;Onodera C;Kidwell C;Tan Y;Graugnard E;Kuang W;Lee J;Knowlton WB;Yurke B;Hughes WL
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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