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arXiv · 1909.03876

Step edge-mediated assembly of periodic arrays of long graphene nanoribbons on Au(111)

Chuanxu Ma·Zhongcan Xiao·Wenchang Lu·Jingsong Huang·Kunlun Hong·Jerzy Bernholc·An-Ping Li
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Abstract

The influence of substrate steps on the bottom-up synthesis of atomically precise graphene nanoribbons (GNRs) on an Au(111) surface is investigated. A straight surface step is found to promote the assembly of long and compact arrays of polymers with enhanced interchain pi-pi stacking interaction, which creates a steric hindrance effect on cyclodehydrogenation to suppress the H passivation of polymer ends. The modified two-stage growth process results in periodic arrays of GNRs with doubled average length near step edges.

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Chuanxu Ma, Zhongcan Xiao, Wenchang Lu, Jingsong Huang, Kunlun Hong, Jerzy Bernholc, An-Ping Li. 2019-09-09. Step edge-mediated assembly of periodic arrays of long graphene nanoribbons on Au(111). https://arxiv.org/abs/1909.03876

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