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.
Wavy graphene sheets from electrochemical sewing of corannulene / Bruno C.; Ussano E.; Barucca G.; Vanossi D.; Valenti G.; Jackson E.A.; Goldoni A.; Litti L.; Fermani S.; Pasquali L.; Meneghetti M.; Fontanesi C.; Scott L.T.; Paolucci F.; Marcaccio M.. - In: CHEMICAL SCIENCE. - ISSN 2041-6520. - STAMPA. - 12:23(2021), pp. 8048-8057. [10.1039/d1sc00898f]
Wavy graphene sheets from electrochemical sewing of corannulene
Bruno C.;Ussano E.;Barucca G.;Vanossi D.;Valenti G.;Goldoni A.;Fermani S.;Pasquali L.;Meneghetti M.;Paolucci F.;Marcaccio M.
2021
Abstract
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.File | Dimensione | Formato | |
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