Fig. 6. Schematic programmed triggered formation of nanocavities in origami-dimer structures using pH and K+ ions as unlocking triggers: subjecting the dimer in configuration I to pH = 9.5 and H1/H2 yields the nanocavity-modified dimer, configuration II, where the cavity is generated in the origami tile without the hairpin-marker. Treatment of the dimer, configuration I, with K+ ions and H1/H2 leads to the nanocavity-functionalized dimer, configuration III, where the cavity is generated in the hairpin-marked origami tile. Subjecting the origami dimer, configuration I, to K+ ions and H1/H2 at pH = 9.5 leads to the origami dimer that contains nanocavities in the two tiles.
