Programmable fabrication of monodisperse graphene nanoribbons via deterministic iterative synthesis

20 June 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


While enormous progress has been achieved in synthesizing atomically precise graphene nanoribbons (GNRs), the preparation of GNRs with fully predetermined length and monomer sequence remains an unmet challenge. Here we report a fabrication method that provides access to structurally diverse and monodisperse “designer” GNRs through utilization of an iterative synthesis strategy, in which a single monomer is incorporated into an oligomer chain during each chemical cycle. Surface-assisted cyclodehydrogenation is subsequently employed to generate the final nanoribbons, and bond-resolved scanning tunneling microscopy is utilized to characterize them.


graphene nanoribbons
iterative synthesis
surface-assisted cyclodehydrogenation
bond-resolved scanning tunneling microscopy
mono dispersity

Supplementary materials

Supplementary information
Additional experimental details, materials, methods and spectral data


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