Fig. 4: Valence-geocoded QD using tetrahedron (Tet)-QD600 and pentagonal pyramid (Pep)-QD660 assemblies.
From: Nanoscale 3D spatial addressing and valence control of quantum dots using wireframe DNA origami
a Schematic of Tet-QD600 with 52 bp edges (~18 nm). Representative TEM images and HRTEM (inset) of b Tet wireframe DNA origami objects and c Tet-QD600. d AGE (0.8%) image of QD600 alone, Tet-QD600, and Tet wireframe DNA origami objects alone (yellow signal: QD600; green signal: QD600 and Tet wireframe DNA origami objects). e HRTEM and selected-area FFT pattern (orange box) of Tet-QD600. f Schematic of Pep-QD660 with 63 bp edges (~21 nm). Representative TEM images and HRTEM (inset) of g Pep wireframe DNA origami objects and h Pep-QD660. i AGE (0.8%) image of QD660 alone, QD660 wrapped with 50 nt A*, Pep-QD660, and Pep wireframe DNA origami objects alone (red signal: QD660; orange signal: Pep wireframe DNA origami objects). j HRTEM and selected-area FFT pattern (orange box) of Pep-QD660. The lattice fringes with d-spacing of 0.351 nm and 0.303 nm can be assigned to the (111) and (200) lattice planes of the cubic zinc blende CdSe. Scale bars: 200 nm  for b–c; 50 nm for g–h; 20 nm for b inset, c inset, g inset, h inset and j; 10 nm for e. Source data are provided as Source Data file.
