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, Ea; Goldoni, A; Litti, L; Fermani, S; Pasquali, L; Meneghetti, M; Fontanesi, C; Scott, Lt; Paolucci, F; Marcaccio, M. - In: CHEMICAL SCIENCE. - ISSN 2041-6520. - ELETTRONICO. - (2021). [10.1039/d1sc00898f]