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1.11.2 Stimuli‐Responsive DNA Origami Plasmonic Structures
ОглавлениеA DNA origami nanodevice that controls the plasmonic interaction between two gold nanorods (AuNRs) was constructed by controlling the rotation of the structure. A structure with two plates (80 nm × 16 nm × 8 nm) was created that could rotate at the central connection (Figure 1.13c) [102]. The direction of rotation could be controlled by selective DNA strand displacement. The conformations of the structures were characterized by CD due to the chirality generated from DNA and the plasmonic interaction between the two AuNRs. Depending on the sequence of the toehold‐containing DNA strands, the structure can form a relaxed or locked state and rotate to the right or left in a programmed fashion. Stepwise reactions can be directly monitored by detecting changes in the CD spectra.