Castro-Fernández, SilviaCruz, Carlos MMariz, Inês F AMárquez, Irene RJiménez, Vicente GPalomino-Ruiz, LucíaCuerva, Juan MMaçôas, ErmelindaCampaña, Araceli G2023-02-082023-02-082020-04-01http://hdl.handle.net/10668/15229A new family of distorted ribbon-shaped nanographenes was designed, synthesized, and their optical and electrochemical properties were evaluated, pointing out an unprecedented correlation between their structural characteristics and the two-photon absorption (TPA) responses and electrochemical band gaps. Three nanographene ribbons have been prepared: a seven-membered-ring-containing nanographene presenting a tropone moiety at the edge, its full-carbon analogue, and a purely hexagonal one. We have found that the TPA cross-sections and the electrochemical band gaps of the seven-membered-ring-containing compounds are higher and lower, respectively, than those of the fully hexagonal polycyclic aromatic hydrocarbon (PAH). Interestingly, the inclusion of additional curvature has a positive effect in terms of non-linear optical properties of those ribbons.enAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/carbon materialsgraphenehelicenesnanostructuresnonlinear opticsresearch article32159924open access10.1002/anie.2020001051521-3773https://digibug.ugr.es/bitstream/10481/64330/1/Manuscript_CastroFernandezS%20et%20al.pdf