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. Author manuscript; available in PMC: 2019 Jun 3.
Published in final edited form as: Chem Rev. 2018 Jan 31;118(6):3032–3053. doi: 10.1021/acs.chemrev.7b00225

Figure 10.

Figure 10

DNA-assembled plasmonic nanostructures for dynamic manipulation of strong chirality. a. Reconfigurable 3D plasmonic nanostructures consist of AuNRs hosted on switchable DNA origami templates. The relative angle between the AuNRs within the structure can be controlled using DNA locks, therefore giving rise to dynamic plasmonic chiral responses. 102 Images reproduced with permission from ref 102. Copyright 2014 Macmillan Publishing Ltd. b. Light-driven 3D plasmonic nanosystem reversibly regulated by UV and visible light for switching between a right-handed and a relaxed state. The dynamic function of the origami structure is enabled by introducing the azobenzene-modified DNA segment on the origami template. 172 Images reproduced with permission from ref 172. Copyright 2016 Macmillan Publishing Ltd. c. Chiral response switched by changing the helix orientation with respect to the light beam. 101 Images reproduced with permission from ref 101. Copyright 2013 Macmillan Publishing Ltd. d. A plasmonic walker that can perform stepwise walking on origami. The walking of the AuNR is enabled through toehold-mediated strand displacement. 173 Images reproduced with permission from ref 173. Copyright 2015 Macmillan Publishing Ltd. e. A plasmonic walker couple system, in which the two AuNR walkers can independently or simultaneously perform stepwise walking along the same DNA origami track. 174 Images reproduced from ref 174. Copyright 2015 American Chemical Society. f. pH regulation of DNA origami-based plasmonic chiral nanostructures. The plasmonic system can be switched between the relaxed and LH/RH state by opening/closing the pH-triggered DNA locks. 175 Images reproduced from ref 175. Copyright 2017 AAAS.