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Critical role of phenyl substitution and catalytic substrate on the surface-assisted polymerization of dibromobianthracene derivatives

AuthorsMoreno, César ; Tenorio, Maria; Panighel, Mirko ; Vilas-Varela, Manuel; Sauthier, Guillaume ; Ceballos, Gustavo ; Peña, Diego; Mugarza, Aitor
Issue Date2018
CitationInternational workshop on-Surface Synthesis (2018)
AbstractUnderstanding the nature and hierarchy of on surface reactions is a major challenge for designing coordination and covalent nanostructures by means of multistep synthetic routes. In particular, intermediates and final products are hard to predict since reaction paths and their activation windows depend on the choice of both the molecular precursor design and the substrate. Here we report a systematic study of the effect of the catalytic metal surface to reveal how a single precursor can give rise to very distinct polymers that range from coordination and covalent non planar polymer chains of distinct chirality, to atomically precise graphene nanoribbons and nanoporous graphene or superlattices of graphene nanoribbons. Our precursor consists on adding two phenyl substituents to 10,10-dibromo 9,9-bianthracene (DP-DBBA), a well-studied precursor in the on-surface synthesis of graphene nanoribbons. The critical role of the monomer design on the reaction paths is inferred from the fact that the phenyl substitution leads to very distinct products in each one of the studied metallic substrates.
DescriptionResumen del póster presentado al International workshop On-Surface Synthesis (OSS), celebrado en Sant Feliu de Guíxol (España) del 23 al 28 de septiembre de 2018.
Appears in Collections:(CIN2) Comunicaciones congresos
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