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Substrate-Independent Growth of Atomically Precise Chiral Graphene Nanoribbons

2016; American Chemical Society; Volume: 10; Issue: 9 Linguagem: Inglês

10.1021/acsnano.6b05269

1936-086X

Dimas G. de Oteyza, Aran García-Lekue, Manuel Vilas‐Varela, Néstor Merino‐Díez, Eduard Carbonell-Sanromà, Martina Corso, Guillaume Vasseur, Celia Rogero, Enrique Guitián, José Ignacio Pascual, J. Enrique Ortega, Yutaka Wakayama, Diego Peña,

Molecular Junctions and Nanostructures

Contributing to the need for new graphene nanoribbon (GNR) structures that can be synthesized with atomic precision, we have designed a reactant that renders chiral (3,1)-GNRs after a multistep reaction including Ullmann coupling and cyclodehydrogenation. The nanoribbon synthesis has been successfully proven on different coinage metals, and the formation process, together with the fingerprints associated with each reaction step, has been studied by combining scanning tunneling microscopy, core-level spectroscopy, and density functional calculations. In addition to the GNR's chiral edge structure, the substantial GNR lengths achieved and the low processing temperature required to complete the reaction grant this reactant extremely interesting properties for potential applications.