On-surface synthesis of porous graphene nanoribbons containing nonplanar [14]annulene pores

Ajayakumar MR, Di Giovannantonio M, Pignedoli CA, Yang L, Ruffieux P, Ma J, Fasel R, Feng X (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Polymer Science Wiley-Blackwell

Book Volume: 60

Pages Range: 1912-1917

Journal Issue: 12

DOI: 10.1002/pol.20220003

Abstract

The precise introduction of nonplanar pores in the backbone of graphene nanoribbon represents a great challenge. Here, we explore a synthetic strategy toward the preparation of nonplanar porous graphene nanoribbon from a predesigned dibromohexabenzotetracene monomer bearing four cove-edges. Successive thermal annealing steps of the monomers indicate that the dehalogenative aryl-aryl homocoupling yields a twisted polymer precursor on a gold surface and the subsequent cyclodehydrogenation leads to a defective porous graphene nanoribbon containing nonplanar [14]annulene pores and five-membered rings as characterized by scanning tunneling microscopy and noncontact atomic force microscopy. Although the C–C bonds producing [14]annulene pores are not achieved with high yield, our results provide new synthetic perspectives for the on-surface growth of nonplanar porous graphene nanoribbons.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) / Swiss Federal Laboratories for Materials Science & Technology CH Switzerland (CH)

How to cite

APA:

Ajayakumar, M.R., Di Giovannantonio, M., Pignedoli, C.A., Yang, L., Ruffieux, P., Ma, J.,... Feng, X. (2022). On-surface synthesis of porous graphene nanoribbons containing nonplanar [14]annulene pores. Journal of Polymer Science, 60(12), 1912-1917. https://doi.org/10.1002/pol.20220003

MLA:

Ajayakumar, M. R., et al. "On-surface synthesis of porous graphene nanoribbons containing nonplanar [14]annulene pores." Journal of Polymer Science 60.12 (2022): 1912-1917.

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