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dc.contributor.authorMoreno Cruz, Carlos 
dc.contributor.authorMárquez, Irene R.
dc.contributor.authorMariz, Inés F. A.
dc.contributor.authorBlanco Izquierdo, Víctor 
dc.contributor.authorSánchez-Sánchez, Carlos
dc.contributor.authorSobrado, Jesús M.
dc.contributor.authorMartín-Gago, José A.
dc.contributor.authorCuerva, Juan M.
dc.contributor.authorMaçôas, Ermelinda
dc.contributor.authorGonzález Campaña, Araceli 
dc.date.accessioned2019-04-03T12:47:35Z
dc.date.available2019-04-03T12:47:35Z
dc.date.issued2018-03-14
dc.identifier.citationEnantiopure distorted ribbon-shaped nanographene combining two-photon absorptionbased upconversion and circularly polarized luminescence. Chem. Sci., 2018, 9, 3917–3924. [DOI: 10.1039/c8sc00427g].es_ES
dc.identifier.issn2041-6539
dc.identifier.urihttp://hdl.handle.net/10481/55335
dc.description.abstractHerein we describe a distorted ribbon-shaped nanographene exhibiting unprecedented combination of optical properties in graphene-related materials, namely upconversion based on two-photon absorption (TPA-UC) together with circularly polarized luminescence (CPL). The compound is a graphene molecule of ca. 2 nm length and 1 nm width with edge defects that promote the distortion of the otherwise planar lattice. The edge defects are an aromatic saddle-shaped ketone unit and a [5]carbohelicene moiety. This system is shown to combine two-photon absorption and circularly polarized luminescence and a remarkably long emission lifetime of 21.5 ns. The [5]helicene is responsible for the chiroptical activity while the push–pull geometry and the extended network of sp2 carbons are factors favoring the nonlinear absorption. Electronic structure theoretical calculations support the interpretation of the results.es_ES
dc.description.sponsorshipThis project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (ERC-2015-STG-677023). We also thank the Ministerio de Economía y Competitividad (MINECO, Spain) (CTQ2015-70283-P, CTQ2014-53598-R, MAT2014-54231-C4-1P, FIS2016-77578-R) and the “Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UGR)”. A. G. C., C. S. S. and C. M. C. acknowledge funding from MINECO (Spain) for RyC-2013-12943, IJCI-2014-19291 and BES-2016-076371 contracts, respectively. I. R. M. thanks UGR (Spain) for a postdoctoral scholarship. I. M. and E. M. thank the Fundação para a Ciência e a Tecnologia for financial support (IF/00759/2013 and post-doc grant SFRH/BPD/75782/2011). We thank the CSIRC-Alhambra for supercomputing facilities.es_ES
dc.language.isoenges_ES
dc.publisherChemical sciencees_ES
dc.rightsAtribución-NoComercial 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/es/*
dc.titleEnantiopure distorted ribbon-shaped nanographene combining two-photon absorptionbased upconversion and circularly polarized luminescencees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1039/c8sc00427g


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