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dc.rights.licenseopenen_US
dc.contributor.authorALVARO-MARTINS, Maria Joao
dc.contributor.authorGARCES-GARCES, Jose
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorSCALABRE, Antoine
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorLIU, Peizhao
dc.contributor.authorFERNANDEZ-LAZARO, Fernando
dc.contributor.authorSASTRE-SANTOS, Angela
dc.contributor.authorBASSANI, Dario M.
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
dc.date.accessioned2024-04-16T14:22:55Z
dc.date.available2024-04-16T14:22:55Z
dc.date.issued2023-02-01
dc.identifier.issn1439-7641en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199191
dc.description.abstractEnThe synthesis and characterization of diketopyrrolopyrroles and perylenemonoimidodiesters linked to a substituted benzoic acid in the ortho, meta, and para positions, are reported. Grafting of these dyes on the surface of chiral silica nanohelices is used to probe how the morphology of the platform at the mesoscopic level affects the induction of chiroptical properties onto achiral molecular chromophores. The grafted structures are weakly (diketopyrrolopyrroles) or strongly (perylenemonoimidodiesters) emissive, exhibiting both locally-excited state emission and a broad, structureless emission assigned to excimers. The dissymmetry factors obtained using circular dichroism highlight optimized supramolecular organization between the chromophores for enhancing the chiroptical properties of the system. In the ortho- derivatives, poor organization due to steric hindrance is reflected in a low density of chromophores on walls of the silica-nanostructures (<0.1 vs. >0.3 and up to 0.6 molecules/nm2 for the ortho and meta or para derivatives, respectively) and lower gabs values than in the other derivatives (gabs<2×10−5 vs 6×10−5 for the ortho and para derivatives, respectively). The para derivatives presented a better organization and increased values of gabs. All grafted chromophores evidence varying degrees of excimer emission which was not found to directly correlate to their grafting density.
dc.description.sponsorshipInduction Chirale de la Microstructure vers l'Electron pour une Emission Radiative Anisotrope - ANR-21-CE09-0012en_US
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subject.enChirality
dc.subject.enDiketopyrrolopyrrole
dc.subject.enFluorescence
dc.subject.enPerylenemonoimidodiesters
dc.subject.enSilica nanosystems
dc.title.enDisentangling Excimer Emission from Chiral Induction in Nanoscale Helical Silica Scaffolds Bearing Achiral Chromophores
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/cphc.202200573en_US
dc.subject.halChimie/Matériauxen_US
bordeaux.journalChemphyschemen_US
bordeaux.volume24en_US
bordeaux.hal.laboratoriesCBMN : Chimie & de Biologie des Membranes & des Nano-objets - UMR 5248en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux INPen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Chemphyschem&amp;rft.date=2023-02-01&amp;rft.volume=24&amp;rft.issue=3&amp;rft.eissn=1439-7641&amp;rft.issn=1439-7641&amp;rft.au=ALVARO-MARTINS,%20Maria%20Joao&amp;GARCES-GARCES,%20Jose&amp;SCALABRE,%20Antoine&amp;LIU,%20Peizhao&amp;FERNANDEZ-LAZARO,%20Fernando&amp;rft.genre=article


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