A triskelion-shaped saddle-helix hybrid nanographene
Metadatos
Afficher la notice complèteAuteur
Moreno Cruz, Carlos; Márquez, Irene R.; Castro-Fernández, Silvia; Cuerva Carvajal, Juan Manuel; Macoas, Ermelinda; González Campaña, AraceliMateria
nanographenes helicenes circularly polarized luminescence nonlinear optics
Date
2019-04-10Referencia bibliográfica
Cruz Carlos M. [et al.]. A triskelion-shaped saddle-helix hybrid nanographene. Angew. Chem. Int. Ed., 2019
Patrocinador
We acknowledge the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (ERC-2015-STG-677023) and the Ministerio de Economía y Competitividad (MINECO, Spain) (CTQ2015-70283- P, UNGR15-CE-3478, BES-2016-076371 and RyC-2013-12943). E.M. thanks the Fundação para a Ciência e a tecnologia (PTDC/NAN-MAT729317/2017 and PTDC/QUI-QFI/29319/2017). We thank the CSIRC-Alhambra from the University of Granada.Résumé
A unique rippled nanographene constituted by 52 fused
rings is presented in which six out-of-plane motifs are fully fused into
a triangular aromatic surface of ca. 2.5 nm size. Three units of an
unprecedented fully lateral π-extended octabenzo[5]helicene
together with three units of saddle-shaped heptagonal rings are
combined in a single structure leading to a well-soluble warped
nanographene. The two pairs of possible enantiomers have been
isolated and their linear, non-linear and chiroptical properties
evaluated, revealing an outstanding quantum yield and brightness
values at low energy together with good chiroptical responses both
in the absorption and emission