Letter

Interconnecting Gold Islands with DNA Origami Nanotubes

Department of Chemistry and Biochemistry & the Biodesign Institute
School of Electrical, Computer, and Energy Engineering
Arizona State University, Tempe, Arizona 85287, United States
Nano Lett., 2010, 10 (12), pp 5065–5069
DOI: 10.1021/nl1033073
Publication Date (Web): November 11, 2010
Copyright © 2010 American Chemical Society
* To whom correspondence should be addressed, hao.yan@asu.edu and hongbin.yu@asu.edu.

Abstract

Abstract Image

Scaffolded DNA origami has recently emerged as a versatile, programmable method to fold DNA into arbitrarily shaped nanostructures that are spatially addressable, with sub-10-nm resolution. Toward functional DNA nanotechnology, one of the key challenges is to integrate the bottom-up self-assembly of DNA origami with the top-down lithographic methods used to generate surface patterning. In this report we demonstrate that fixed length DNA origami nanotubes, modified with multiple thiol groups near both ends, can be used to connect surface patterned gold islands (tens of nanometers in diameter) fabricated by electron beam lithography (EBL). Atomic force microscopic imaging verified that the DNA origami nanotubes can be efficiently aligned between gold islands with various interisland distances and relative locations. This development represents progress toward the goal of bridging bottom-up and top-down assembly approaches.

DNA sequences, experimental methods, and additional atomic force microscopy images. This material is available free of charge via the Internet at http://pubs.acs.org.

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Received 17 September 2010
Published online 11 November 2010
Published in print 8 December 2010
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