Fig. 2: Debromination and C–C coupling of 1.
From: On-surface synthesis of nitrogen-doped nanographene with an [18]annulene pore on Ag(111)

a STM topography of the products after annealing at 100 °C. b Close-up view of the topography and (c) the corresponding chemical structure. d STM topography of the products after annealing at 150 °C. e Close-up view of the topography and (f) the corresponding chemical structure. Measurement parameters: sample bias voltage V = 50 mV and tunneling current I = 10 pA in a. V = 200 mV and I = 10 pA in b. V = 200 mV and I = 3 pA in d. V = 200 mV and I = 5 pA in e.