Abstract

Abstract Armchair graphene nanoribbons (AGNRs) are promising materials with conductivity dependent on width (N), but their open-shell character due to edge states can cause instabilities. We previously showed that peri-benzo fusion at AGNRs’ edges removes the edge states while preserving width-dependent conductivity. In this work, we investigated the effect of peri-fusion position on conductivity by evaluating decay constant of exchange interaction (βJ) between radicals at both ends of N = 8 AGNRs. It was found that the βJ for shorter ribbons was highly sensitive to the fused ring's position, with less variation in longer ribbons.

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