Journal of the American Chemical Society
Journal of the American Chemical Society
4 years ago

Edge Functionalization of Structurally Defined Graphene Nanoribbons for Modulating the Self-Assembled Structures

Edge Functionalization of Structurally Defined Graphene Nanoribbons for Modulating the Self-Assembled Structures
Akimitsu Narita, Klaus Müllen, Ian Cheng-Yi Hou, Hao Lu, Martin Baumgarten, Jérôme Cornil, David Beljonne, Boya Radha, Valentin Diez Cabanes, Cinzia Casiraghi, Ashok Keerthi, Daniele Rizzo
Edge functionalization of bottom-up synthesized graphene nanoribbons (GNRs) with anthraquinone and naphthalene/perylene monoimide units has been achieved through a Suzuki coupling of polyphenylene precursors bearing bromo groups, prior to the intramolecular oxidative cyclo-dehydrogenation. High efficiency of the substitution has been validated by MALDI-TOF MS analysis of the functionalized precursors and FT-IR, Raman, and XPS analyses of the resulting GNRs. Moreover, AFM measurements demonstrated the modulation of the self-assembling behavior of the edge-functionalized GNRs, revealing that GNR-PMI formed an intriguing rectangular network. This result suggests the possibility of programming the supramolecular architecture of GNRs by tuning the functional units.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b09031

DOI: 10.1021/jacs.7b09031

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