Show simple item record

Direct Observation of Reversible Electronic Energy Transfer Involving an Iridium Center

hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorDENISOV, Sergey A.
hal.structure.identifierSchool of Chemistry [Birmingham]
dc.contributor.authorCUDRÉ, Yanouk
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorVERWILST, Peter
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorJONUSAUSKAS, Gediminas
hal.structure.identifierDepartment of analytical chemistry, Granada
dc.contributor.authorMARIN-SUAREZ, Marta
hal.structure.identifierDepartment of analytical chemistry, Granada
dc.contributor.authorFERNANDEZ-SANCHEZ, Jorge Fernando
hal.structure.identifierSchool of Chemistry [Birmingham]
dc.contributor.authorBARANOFF, Etienne
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorMCCLENAGHAN, Nathan D.
dc.date.created2013-12-14
dc.date.issued2014-02-20
dc.identifier.issn0020-1669
dc.description.abstractEnA cyclometalated iridium complex is reported where the core complex comprises naphthylpyridine as the main ligand and the ancillary 2,2'-bipyridine ligand is attached to a pyrene unit by a short alkyl bridge. To obtain the complex with satisfactory purity, it was necessary to modify the standard synthesis (direct reaction of the ancillary ligand with the chloro-bridged iridium dimer) to a method harnessing an intermediate tetramethylheptanolate-based complex, which was subjected to acid-promoted removal of the ancillary ligand and subsequent complexation. The photophysical behavior of the bichromophoric complex and a model complex without the pendant pyrene were studied using steady-state and time-resolved spectroscopies. Reversible electronic energy transfer (REET) is demonstrated, uniquely with an emissive cyclometalated iridium center and an adjacent organic chromophore. After excited-state equilibration is established (5 ns) as a result of REET, extremely long luminescence lifetimes of up to 225 µs result, compared to 8.3 µs for the model complex, without diminishing the emission quantum yield. As a result, remarkably high oxygen sensitivity is observed in both solution and polymeric matrices.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.title.enDirect Observation of Reversible Electronic Energy Transfer Involving an Iridium Center
dc.typeArticle de revue
dc.identifier.doi10.1021/ic4030712
dc.subject.halChimie/Chimie inorganique
dc.description.sponsorshipEuropeTris-heteroleptic cyclometalated iridium(III) complexes for white electroluminescence
bordeaux.journalInorganic Chemistry
bordeaux.page2677-2682
bordeaux.volume53
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-00968636
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00968636v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2014-02-20&rft.volume=53&rft.issue=5&rft.spage=2677-2682&rft.epage=2677-2682&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=DENISOV,%20Sergey%20A.&CUDR%C3%89,%20Yanouk&VERWILST,%20Peter&JONUSAUSKAS,%20Gediminas&MARIN-SUAREZ,%20Marta&rft.genre=article


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record