Fig. 1: Effect of initial DBBA coverage on the final GNR lengths on the Au(111) surface.
From: Long and isolated graphene nanoribbons by on-surface polymerization on Au(111)
STM topographs showing the molecular self-assembled phases of DBBA at the initial coverages of (a) 0.5 ML, (b) 1.0 ML, and (c) 1.5 ML, on the Au(111) surface. d–f Corresponding STM topographs after the cyclodehydogenation step revealing the 7-aGNRs and (g–i) their length distribution histograms of the three samples shown in (d–f), respectively. STM set parameters are +2 V/10 pA for (a–c) and −2 V/10 pA for (d–f). Scale bars are 20 nm.
