Figure 4: AFM images of the thermal reaction products of DAPh/Cu(001).
From: Strain-induced skeletal rearrangement of a polycyclic aromatic hydrocarbon on a copper surface
(a–c) AFM images of 4, 5 and 6, respectively, on Cu(001) in constant-height mode with CO-terminal tips. (d–f) Schematic illustration of the adsorption structures of 4, 5 and 6, respectively. All of the products are expected to be flattened on the surface. (g–i) Calculated structures of 4, 5 and 6, respectively, in free space. Blue spheres in g represent C atoms of one of the azuleno moieties in DAPyr 4. A bent red line in g indicates that the sterically hindered azuleno moieties are distorted in free space. The images in a–c were measured at the tip height corresponding to V=50 mV and I=200 pA over a bare surface. Scale bar, 5 Å.
