Journal
NANO LETTERS
Volume 10, Issue 9, Pages 3367-3372Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl101079u
Keywords
DNA; origami; nanoparticles; quantum dot; self-assembly; periodic
Categories
Funding
- DARPA [N66001-01-C-80345]
- NIH [P20 RR016454]
- Direct For Computer & Info Scie & Enginr
- Division of Computing and Communication Foundations [0855212] Funding Source: National Science Foundation
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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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