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Precise Synthesis and Characterization of Fourth-Generation Dendrimer-like Star-Branched Poly(methyl methacrylate)s and Block Copolymers by Iterative Methodology Based on Living Anionic Polymerization

dc.rights.licenseopen
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorHIRAO, Akira
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorWATANABE, Takumi
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorISHIZU, Koji
hal.structure.identifierPohang University of Science and Technology [POSTECH]
hal.structure.identifierCtr Integrated Mol Syst, Pohang Accelerator Lab, South Korea
dc.contributor.authorREE, Moonhor
hal.structure.identifierPohang University of Science and Technology [POSTECH]
hal.structure.identifierCtr Integrated Mol Syst, Pohang Accelerator Lab, South Korea
dc.contributor.authorJIN, Sangwoo
hal.structure.identifierPohang University of Science and Technology [POSTECH]
hal.structure.identifierCtr Integrated Mol Syst, Pohang Accelerator Lab, South Korea
dc.contributor.authorJIN, Kyeong Sik
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorDEFFIEUX, Alain
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorSCHAPPACHER, Michel
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorCARLOTTI, Stéphane
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2009
dc.identifier.issn0141-8130
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20712
dc.description.abstractEnA series of the fourth-generation (4G) dendrimer-like star-branched poly(methyl methacrylate)s, (PMMA)s, with high branch densities have been synthesized by the iterative "arm-first" divergent methodology. It involves a two-reaction sequence in each iterative process: (1) a linking reaction of alpha-functionalized living anionic PMMA with either two or four tert-butyldimethylsilyloxymethylphenyl (SMP) groups with benzyl bromide (BnBr)-chain-end-functionalized PMMA and (2) a transformation reaction of the SMP groups into BnBr functions. Accordingly, the branch segments are introduced by the (1) linking reaction based on termination reaction using premade living anionic polymers. The two-reaction sequence has been repeated four times to build up the 4G dendrimer-like star-branched polymers composed of four branch junctures in three generations and two branch junctures in one generation. Likewise, three block copolymers with the same dense 4G branched architectures have been synthesized by the linking reaction of the 3G brominated PMMA with either of living anionic polymers of tert-butyl methacrylate, (2,2-dimethyl-1,3-dioxolan-4-yl)methyl methacrylate, and 2-vinylpyridine. Unfortunately, however, the synthesis of a highly dense 4G polymer composed of four branch junctures in all generations was not successful possibly due to steric hindrance. The resulting dendrimer-like star-branched (PMMA)s have been analyzed by RALLS, SAXS, and viscosity measurements to obtain their hydrodynamic radii, radii of gyration, intrinsic viscosities, and g' values. The relationship between either of such values and the branched structures, generation, or molecular weight will be discussed. The observation of the largest and most dense 4G polymer by AFM was attempted in order to directly visualize the dendrimer-like star-branched polymer.
dc.language.isoen
dc.publisherElsevier
dc.subject.enTERMINATOR MULTIFUNCTIONAL INITIATOR
dc.subject.enSELECTIVE DEGRADABLE LINKAGES
dc.subject.enATOMIC-FORCE MICROSCOPY
dc.subject.enRADICAL POLYMERIZATION
dc.subject.enPOLY(ETHYLENE OXIDE)S
dc.subject.enCOUPLING REACTION
dc.subject.enTRANSFORMATION REACTIONS
dc.subject.enHYPERBRANCHED POLYMERS
dc.subject.enDIVERGENT SYNTHESIS
dc.subject.enSURFACE-PROPERTIES
dc.title.enPrecise Synthesis and Characterization of Fourth-Generation Dendrimer-like Star-Branched Poly(methyl methacrylate)s and Block Copolymers by Iterative Methodology Based on Living Anionic Polymerization
dc.typeArticle de revue
dc.identifier.doi10.1021/ma802209n
dc.subject.halChimie/Polymères
bordeaux.journalInternational Journal of Biological Macromolecules
bordeaux.page682-693
bordeaux.volume42
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue3
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00380431
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00380431v1
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