Afficher la notice abrégée

Terpy(Pt–salphen)2 Switchable Luminescent Molecular Tweezers

hal.structure.identifierInstitut Parisien de Chimie Moléculaire [IPCM]
dc.contributor.authorDOISTAU, Benjamin
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorTRON, Arnaud
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorDENISOV, Sergey A.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorJONUSAUSKAS, Gediminas
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorMCCLENAGHAN, Nathan D.
hal.structure.identifierInstitut Parisien de Chimie Moléculaire [IPCM]
dc.contributor.authorGONTARD, Geoffrey
hal.structure.identifierInstitut Parisien de Chimie Moléculaire [IPCM]
dc.contributor.authorMARVAUD, Valérie
hal.structure.identifierInstitut Parisien de Chimie Moléculaire [IPCM]
dc.contributor.authorHASENKNOPF, Bernold
hal.structure.identifierInstitut Parisien de Chimie Moléculaire [IPCM]
dc.contributor.authorVIVES, Guillaume
dc.date.created2014-06-21
dc.date.issued2014
dc.identifier.issn0947-6539
dc.description.abstractEnThe design and synthesis of switchable molecular tweezers based on a luminescent terpy(Pt-salphen)2 (1; terpy=terpyridine) complex is reported. Upon metal coordination, the tweezers can switch from an open “W”-shaped conformation to a closed “U”-shaped form that is adapted for selective recognition of cations. Closing of the tweezers by metal coordination (M=Zn2+, Cu2+, Pb2+, Fe2+, Hg2+) was monitored by 1H NMR and/or UV/Vis titrations. During the titration, exclusive formation of the 1:1 complex [M(1)] was observed, without appearance of an intermediate 1:2 complex [M(1)2]. The crystallographic structure of the 1:1 complex was obtained with Pb2+ and showed a distorted helical structure. Selective intercalation of Hg2+ cations by the closed “U” form was observed. The tweezers were reopened by selective metal decoordination of the terpyridine ligand by using tris(2-aminoethyl)amine (tren) as a competitive ligand without modification of the Pt–salphen complex. Detailed photophysical studies were performed on the open and closed tweezers. Structured emission was observed in the open form from the Pt–salphen moieties, with a high quantum yield and a long lifetime. The emission is slightly modified upon closing with 1 equivalent of Zn2+ or Hg2+, whereas a dramatic quenching was obtained upon intercalation of additional Hg2+.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subject.enmolecular tweezers
dc.subject.enPlatinum
dc.subject.ensalphen
dc.subject.enPhosphorescence
dc.subject.enCooperativity
dc.title.enTerpy(Pt–salphen)2 Switchable Luminescent Molecular Tweezers
dc.typeArticle de revue
dc.identifier.doi10.1002/chem.201404064
dc.subject.halChimie/Chimie de coordination
bordeaux.journalChemistry - A European Journal
bordeaux.page15799-15807
bordeaux.volume20
bordeaux.issue48
bordeaux.peerReviewedoui
hal.identifierhal-01103182
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01103182v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20-%20A%20European%20Journal&rft.date=2014&rft.volume=20&rft.issue=48&rft.spage=15799-15807&rft.epage=15799-15807&rft.eissn=0947-6539&rft.issn=0947-6539&rft.au=DOISTAU,%20Benjamin&TRON,%20Arnaud&DENISOV,%20Sergey%20A.&JONUSAUSKAS,%20Gediminas&MCCLENAGHAN,%20Nathan%20D.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée