Programmable periodicity of quantum dot arrays with DNA origami nanotubes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 20681601.
- Also identified by DOI 10.1021/nl101079u and PMC identifier 2935673.
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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.
Medical subject headings
- DNA
- Nanotubes
- Quantum Dots