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No matter the order of monomer addition for the synthesis of well-defined block copolymers by sequential group transfer polymerization using N-heterocyclic carbenes as catalysts

dc.rights.licenseopen
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorRAYNAUD, Jean
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorLIU, Na
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorFÈVRE, Maréva
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorGNANOU, Yves
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorTATON, Daniel
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2011
dc.identifier.issn1759-9954
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20430
dc.description.abstractEnUnsaturated N-heterocyclic carbenes (NHCs) such as 1,3-bis(di-isopropyl)imidazol-2-ylidene (1) and 1,3-bis(di-tert-butyl)imidazol-2-ylidene (2) are shown to catalyze the sequential group transfer polymerization (GTP) of (meth) acrylic monomers. A variety of block copolymers including not only alkyl methacrylate but also alkyl acrylate monomer units as well as blocks deriving from N,N-dimethylacrylamide and methacrylonitrile were thus obtained at room temperature, using 1-methoxy-2-methyl-1-trimethylsiloxypropene (MTS) as initiator in THF as solvent. Block copolymerizations could be achieved, starting indifferently from the GTP of the acrylic monomer to that of the methacrylic one or vice versa, that is, regardless of the order of addition of the two monomers, in contrast to most examples of block copolymer synthesis by "controlled/living" sequential polymerization. It is postulated that these NHC-catalyzed GTPs of (meth) acrylics proceed via a single step concerted-like associative mechanism, involving the formation of thermodynamically unstable intermediates or transition states, likely hypervalent siliconates, with no detectable anionic enolates formed.
dc.language.isoen
dc.publisherRoyal Society of Chemistry - RSC
dc.subject.enRING-OPENING POLYMERIZATION
dc.subject.enTRANSFER RADICAL POLYMERIZATION
dc.subject.enLIVING POLYMERIZATION
dc.subject.en(METH)ACRYLIC MONOMERS
dc.subject.enPOLY(ETHYLENE OXIDE)S
dc.subject.enETHYLENE-OXIDE
dc.subject.enREACTIVITY
dc.subject.enINITIATORS
dc.subject.enPOLYMERS
dc.subject.enMETHACRYLATES
dc.title.enNo matter the order of monomer addition for the synthesis of well-defined block copolymers by sequential group transfer polymerization using N-heterocyclic carbenes as catalysts
dc.typeArticle de revue
dc.identifier.doi10.1039/c1py00077b
dc.subject.halChimie/Polymères
bordeaux.journalPolymer Chemistry
bordeaux.page1706-1712
bordeaux.volume2
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue8
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00817516
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00817516v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Polymer%20Chemistry&rft.date=2011&rft.volume=2&rft.issue=8&rft.spage=1706-1712&rft.epage=1706-1712&rft.eissn=1759-9954&rft.issn=1759-9954&rft.au=RAYNAUD,%20Jean&LIU,%20Na&F%C3%88VRE,%20Mar%C3%A9va&GNANOU,%20Yves&TATON,%20Daniel&rft.genre=article


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