Fig. 3: Atomic hydrogen induced planarization yielding nanographenes 2 and 3 on TiO2(110)-(1 × 1).
From: Cyclodehydrogenation of molecular nanographene precursors catalyzed by atomic hydrogen
a 3D STM view of nanographenes 2. High-resolution simulated (b) and experimental (c) filled-state images of 2. High-resolution simulated (d) and experimental (e) empty state images of 2. f 3D STM image of nanographene 3. High-resolution simulated (g) and experimental (h) filled state images of 3. High-resolution simulated (i) and experimental (j) empty state images of 3. k Plausible reaction mechanism for planarization of 6 into 3 catalyzed by atomic hydrogen. Light violet marks hexagonal rings present in molecular precursor 6, whereas dark violet in intermediates and nanographene 3 indicates rings generated through hydrogen catalyzed cyclodehydrogenation. Bias voltage: +1.5 V (a –f), −1.7 V (c), +2.3 V (e), −1.5 V (h), +2.2 V (j), tunneling current: 10 pA (c, j), 15 pA (a–h). Source data are provided as a Source Data file.
