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.
This document was originally published by American Chemical Society in Nano Letters. Copyright restrictions may apply. http://doi.org/10.1021/nl101079u
Bui, Hieu; Onodera, Craig; Kidwell, Carson; Tan, YerPeng; Graugnard, Elton; Kuang, Wan; Lee, Jeunghoon; Knowlton, William B.; Yurke, Bernard; and Hughes, William L.. (2010). "Programmable Periodicity of Quantum Dot Arrays with DNA Origami Nanotubes". Nano Letters, 10(9), 3367-3372. http://doi.org/10.1021/nl101079u