Wavy graphene sheets from electrochemical sewing of corannulene

The presence of non-hexagonal rings in the honeycomb carbon arrangement of graphene produces rippled graphene layers with valuable chemical and physical properties. In principle, a bottom-up approach to introducing distortion from planarity of a graphene sheet can be achieved by careful insertion of...

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Bibliographic Details
Published in:Chemical science (Cambridge) 2021-06, Vol.12 (23), p.848-857
Main Authors: Bruno, Carlo, Ussano, Eleonora, Barucca, Gianni, Vanossi, Davide, Valenti, Giovanni, Jackson, Edward A, Goldoni, Andrea, Litti, Lucio, Fermani, Simona, Pasquali, Luca, Meneghetti, Moreno, Fontanesi, Claudio, Scott, Lawrence T, Paolucci, Francesco, Marcaccio, Massimo
Format: Article
Language:English
Subjects:
Anodizing
Carbon
Chemistry
Electrochemistry
Flight operations
Graphene
Hydrocarbons
Mass spectrometry
Microscopy
Physical properties
Polycyclic aromatic hydrocarbons
Quantum chemistry
Scanning electron microscopy
Scanning probe microscopy
Sewing
Spectroscopy
Transmission electron microscopy
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Summary:The presence of non-hexagonal rings in the honeycomb carbon arrangement of graphene produces rippled graphene layers with valuable chemical and physical properties. In principle, a bottom-up approach to introducing distortion from planarity of a graphene sheet can be achieved by careful insertion of curved polyaromatic hydrocarbons during the growth of the lattice. Corannulene, the archetype of such non-planar polyaromatic hydrocarbons, can act as an ideal wrinkling motif in 2D carbon nanostructures. Herein we report an electrochemical bottom-up method to obtain egg-box shaped nanographene structures through a polycondensation of corannulene that produces a new conducting layered material. Characterization of this new polymeric material by electrochemistry, spectroscopy, electron microscopy (SEM and TEM), scanning probe microscopy, and laser desorption-ionization time of flight mass spectrometry provides strong evidence that the anodic polymerization of corannulene, combined with electrochemically induced oxidative cyclodehydrogenations (Scholl reactions), leads to polycorannulene with a wavy graphene-like structure. A bottom-up synthesis of wavy graphene structures obtained through an anodic polymerization process, combined with an electrochemically triggered oxidative cyclodehydrogenation, of the bowl-shaped polyaromatic hydrocarbon corannulene.
ISSN:2041-6520
2041-6539
DOI:10.1039/d1sc00898f