Fig. 1
From: A modular synthetic approach for band-gap engineering of armchair graphene nanoribbons
Graphene nanoribbons (GNRs). a Zigzag and armchair graphene nanoribbons (aGNRs). b A modular approach for aGNR synthesis. N: the number of dimer lines. n: the number of repeating units. pin: pinacol group. Eopt.gap: optical band-gap energy
