Journal
ACS NANO
Volume 11, Issue 2, Pages 1172-1179Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.6b06861
Keywords
DNA origami; DNA nanotechnology; plasmonic nanostructure; gold nanorod; dark-field scattering spectroscopy
Categories
Funding
- Wallace H. Coulter Department of Biomedical Engineering
- Winship Cancer Institute
- National Natural Science Foundation of China [21573051, 91127021, 21273052, 11174042, 11374039]
- National Basic Research Programs of China [2016YFA0201601]
- Beijing Natural Science Foundation [L140008]
- Beijing Municipal Science & Technology Commission [Z161100000116036]
- CAS Interdisciplinary Innovation Team
- National Basic Research Program of China (973 Program) [2011CB922204, 2013CB632805]
- National Institutes of Health [1R01EB018659]
- Division of Computing and Communication Foundations
- Direct For Computer & Info Scie & Enginr [1317694] Funding Source: National Science Foundation
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available