Fig. 1: On-surface synthetic strategy.
From: On-surface synthesis and characterization of nitrogen-substituted undecacenes
Schematic representation of the synthesis of N,N′,N″,N‴-tetrahydro-6,12,19,25-tetraazaundecacene 1, its analog with two edge-fused five-membered rings 2, 6,12,19,25-tetraazaundecacene 3, and the pristine undecacene 4 from the corresponding specifically designed precursors 5 and 6.
