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. 2015 Aug 25;6:8098. doi: 10.1038/ncomms9098

Figure 1. Synthesis of boron-doped graphene nanoribbons.

Figure 1

(a) Schematic drawing of the on-surface chemical reaction. (b) STM of molecules, polymerized by annealing at 180 °C and (c) after the tip-induced manipulation. Scale bar, 5 nm. (d) B-GNR, synthesized by annealing at 400 °C. Scale bar, 30 nm. (e–g) High-resolution STM topographies (left) and corresponding simulated STM images (right) of B-GNR, taken with different bias voltages. (h) Chemical structure of B-GNR. Black and pink balls indicate carbon and boron atoms. Measurement parameters: tunnelling current I=5 pA and bias voltage applied to the tip V=−200 mV for (b–d), I=10 pA and V=−3 V for (e), I=10 pA and V=3 V for (f), and I=1 nA and V=−2 mV for (g).