Letter

Chemical Alignment of DNA Origami to Block Copolymer Patterned Arrays of 5 nm Gold Nanoparticles

Department of Physics and Astronomy, Department of Chemistry and Biochemistry, and §Department of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
Nano Lett., 2011, 11 (5), pp 1981–1987
DOI: 10.1021/nl200306w
Publication Date (Web): April 7, 2011
Copyright © 2011 American Chemical Society
*E-mail: davis@byu.edu; Telephone: (801) 422-3238; Fax: (801) 422-0553.

Abstract

Abstract Image

We have used block copolymer patterned arrays of 5 nm gold nanoparticles (AuNPs) for chemically aligned surface attachment of DNA origami. Addition of single-stranded DNA-thiol to AuNPs allowed a base paired attachment of sticky end modified DNA origami. Results indicate a stable, selective attachment between the DNA origami and ssDNA modified AuNPs. Yield data showed 74% of AuNP binding sites forming an attachment with a DNA origami rectangle, and control surfaces showed less than 0.5% nonspecific adsorption.

Details on scaffold and staple strand sequences, experimental procedures, random attachment simulations, and additional AFM data. This material is available free of charge via the Internet at http://pubs.acs.org.

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Received 26 January 2011
Published online 7 April 2011
Published in print 11 May 2011
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