Fig. 1: Synthesis steps for Py-7-AGNRs.
From: Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons

Solution-synthesis of monomer 1 (upper row), used for the on-surface synthesis of Py-7-AGNRs (bottom row). The two possible configurations resulting in pyridinic-N and graphitic-N are highlighted in the last panel.