Fig. 4 | Nature Communications

Fig. 4

From: On-surface light-induced generation of higher acenes and elucidation of their open-shell character

Fig. 4

Heptacene and nonacene on Au(111) surface. a, e High-resolution STM images of heptacene and nonacene species, respectively. Nonacene was obtained by the procedure described in Fig. 2f. Vb = −1 V, I = 4 pA. b, f DFT simulated STM images at −1 V. c, g Top view of the DFT equilibrium geometries of heptacene and nonacene adsorbed on Au(111). d, h Constant-height frequency-shift nc-AFM images acquired with a CO-functionalized tip (z-offset 30 pm below STM set point at −5 mV, 10 pA). Scale bars 1 nm