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dc.rights.licenseopen
dc.contributor.authorADÈS, D.
hal.structure.identifierInstitut de Chimie des Substances Naturelles [ICSN]
dc.contributor.authorBOUCARD, V.
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorCLOUTET, Eric
IDREF: 151048681
dc.contributor.authorSIOVE, A.
dc.contributor.authorOLIVERO, C.
hal.structure.identifierLaboratoire de Physique des Lasers [LPL]
dc.contributor.authorCASTEX, M.
dc.contributor.authorPICHLER, G.
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2000
dc.identifier.issn0021-8979
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/19587
dc.description.abstractEnWe present absorption and photoluminescence features of four samples of carbazole molecules substituted with various electron–acceptor groups. These molecules named 1-(N-ethylcarbazolyl)-2-substituted-2-cyanovinylene contain in their structure the electron–donor carbazole nucleus and cyanovinylene bearing either another nitrile function, an ethylester, a phenyl, or a para-nitrophenyl groups. It is shown that depending on the strength of the donor–acceptor internal charge transfer, both the absorption and emission spectra are more or less redshifted. It is found that the ethyl-ester derivative displays the best relative photoluminescence efficiency among all the samples and its peak is measured at 490 nm when taking amorphous thin film. The microcrystalline powder form of the same material exhibits spectral narrowing and shift of the peak emission. We obtain further narrowing of the emission band and further redshifting of the emission when we illuminate, transversely, a glass capillary containing the crystalline sample by an ultraviolet light-emitting diode.
dc.language.isoen
dc.publisherAmerican Institute of Physics
dc.title.enPhotoluminescence of donor–acceptor carbazole-based molecules in amorphous and powder forms
dc.typeArticle de revue
dc.identifier.doi10.1063/1.372982
dc.subject.halChimie/Polymères
bordeaux.journalJournal of Applied Physics
bordeaux.page7290-7293
bordeaux.volume87
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue10
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-02930315
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02930315v1
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