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

Chuanxu Ma; Zhongcan Xiao; Wenchang Lu; Jingsong Huang; Kunlun Hong; J. Bernholc; An Ping Li

doi:10.1039/c9cc05273a

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

Chuanxu Ma, Zhongcan Xiao, Wenchang Lu, Jingsong Huang, Kunlun Hong, J. Bernholc, An Ping Li

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15 Scopus citations

Abstract

The influence of substrate steps on the bottom-up synthesis of atomically precise graphene nanoribbons (GNRs) on an Au(111) surface is investigated. Straight surface steps are found to promote the assembly of long and compact arrays of polymers with enhanced interchain π-π stacking interactions, which create 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.

Original language	English
Pages (from-to)	11848-11851
Number of pages	4
Journal	Chemical Communications
Volume	55
Issue number	79
DOIs	https://doi.org/10.1039/c9cc05273a
State	Published - 2019

Funding

A portion of this research was conducted at the Center for Nanophase Materials Sciences (CNMS), which is a DOE Office of Science User Facility. This research was funded by grants ONR N00014-16-1-3213 and N00014-16-1-3153. The development of the RMG code was funded by NSF grant OAC-1740309. Supercomputer time was provided by NSF grant ACI-1615114 at the National Center for Supercomputing Applications (NSF OCI-0725070 and ACI-1238993).

Funders	Funder number
National Science Foundation	ACI-1615114, OCI-0725070, ACI-1238993, OAC-1740309
Office of Naval Research	N00014-16-1-3153, N00014-16-1-3213

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10.1039/c9cc05273a

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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. Straight surface steps are found to promote the assembly of long and compact arrays of polymers with enhanced interchain π-π stacking interactions, which create 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.",

author = "Chuanxu Ma and Zhongcan Xiao and Wenchang Lu and Jingsong Huang and Kunlun Hong and J. Bernholc and Li, {An Ping}",

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AU - Ma, Chuanxu

AU - Xiao, Zhongcan

AU - Lu, Wenchang

AU - Huang, Jingsong

AU - Hong, Kunlun

AU - Bernholc, J.

AU - Li, An Ping

PY - 2019

Y1 - 2019

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AB - The influence of substrate steps on the bottom-up synthesis of atomically precise graphene nanoribbons (GNRs) on an Au(111) surface is investigated. Straight surface steps are found to promote the assembly of long and compact arrays of polymers with enhanced interchain π-π stacking interactions, which create 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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EP - 11851

JO - Chemical Communications

JF - Chemical Communications

IS - 79

ER -

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

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