%0 Journal Article
%A Castro-Fernández, Silvia
%A Cruz, Carlos M
%A Mariz, Inês F A
%A Márquez, Irene R
%A Jiménez, Vicente G
%A Palomino-Ruiz, Lucía
%A Cuerva, Juan M
%A Maçôas, Ermelinda
%A Campaña, Araceli G
%T Two-Photon Absorption Enhancement by the Inclusion of a Tropone Ring in Distorted Nanographene Ribbons.
%D 2020
%U http://hdl.handle.net/10668/15229
%X A 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.
%K carbon materials
%K graphene
%K helicenes
%K nanostructures
%K nonlinear optics
%~