Reconfigurable Three-Dimensional Gold Nanorod Plasmonic Nanostructures Organized on DNA Origami Tripod

• Type of Material: Article
• Authors: Pengfei Zhan, National Center for Nanoscience and Technology; Palash K. Dutta, Georgia Institute of Technology; Pengfei Wang, Georgia Institute of Technology; Gang Song, Institute of Applied Physics and Computational Mathematics; Mingjie Dai, Harvard University; Shu-Xia Zhao, Institute of Applied Physics and Computational Mathematics; Zhen-Gang Wang, National Center for Nanoscience and Technology; Peng Yin, Emory University; Wei Zhang, Institute of Applied Physics and Computational Mathematics; Baoquan Ding, National Center for Nanoscience and Technology; Yonggang Ke, Emory University
• Language: English
• Date: 2017-02-01
• Publisher: American Chemical Society
• Publication Version: Author Accepted Manuscript (After Peer Review)
• Copyright Statement: © 2017 American Chemical Society.
• Final Published Version (URL): http://dx.doi.org/10.1021/acsnano.6b06861
• Title of Journal or Parent Work: ACS Nano
• ISSN: 1936-0851
• Volume: 11
• Issue: 2
• Start Page: 1172
• End Page: 1179
• Grant/Funding Information: B.D. acknowledges the support from National Natural Science Foundation of China (21573051, 91127021, 21273052), the National Basic Research Programs of China (2016YFA0201601), the Beijing Natural Science Foundation (L140008), Beijing Municipal Science & Technology Commission (Z161100000116036), and CAS Interdisciplinary Innovation Team.; P.Y. acknowledges support from National Institutes of Health (1R01EB018659).; This work is supported by a Wallace H. Coulter Department of Biomedical Engineering Faculty Startup Grant and a Winship Cancer Institute Billi and Bernie Marcus Research Award to Y.K.; W.Z. acknowledges the support from National Natural Science Foundation of China (11174042, 11374039) and National Basic Research Program of China (973 Program) (2011CB922204, 2013CB632805).
• Keywords: Chemistry, Physical; Physical Sciences; gold nanorod; ARCHITECTURES; DNA nanotechnology; CHIRALITY; Materials Science; Nanoscience & Nanotechnology; PAINT; plasmonic nanostructure; NANOSCALE; Chemistry, Multidisciplinary; Science & Technology - Other Topics; ARRAYS; Science & Technology; DNA origami; Technology; METAMATERIALS; Materials Science, Multidisciplinary; DISCRETE; Chemistry; dark-field scattering spectroscopy
• Research Categories: Engineering, Biomedical

Abstract

Distinct electromagnetic properties can emerge from the three-dimensional (3D) configuration of a plasmonic nanostructure. Furthermore, the reconfiguration of a dynamic plasmonic nanostructure, driven by physical or chemical stimuli, may generate a tailored plasmonic response. In this work, we constructed a 3D reconfigurable plasmonic nanostructure with controllable, reversible conformational transformation using bottom-up DNA self-assembly. Three gold nanorods (AuNRs) were positioned onto a reconfigurable DNA origami tripod. The internanorod angle and distance were precisely tuned through operating the origami tripod by toehold-mediated strand displacement. The transduction of conformational change manifested into a controlled shift of the plasmonic resonance peak, which was studied by dark-field microscopy, and agrees well with electrodynamic calculations. This new 3D plasmonic nanostructure not only provides a method to study the plasmonic resonance of AuNRs at prescribed 3D conformations but also demonstrates that DNA origami can serve as a general self-assembly platform for constructing various 3D reconfigurable plasmonic nanostructures with customized optical properties.