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Iron complexes as potential photocatalysts for controlled radical photopolymerizations: A tool for modifications and patterning of surfaces

dc.rights.licenseopen
hal.structure.identifierInstitut de Science des Matériaux de Mulhouse [IS2M]
dc.contributor.authorTELITEL, Sofia
hal.structure.identifierInstitut de Chimie Radicalaire [ICR]
dc.contributor.authorDUMUR, Frederic
dc.contributor.authorDAMIEN, Campolo
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorPOLY, Julien
hal.structure.identifierInstitut de Chimie Radicalaire [ICR]
dc.contributor.authorGIGMES, Didier
hal.structure.identifierInstitut de Science des Matériaux de Mulhouse [IS2M]
dc.contributor.authorFOUASSIER, Jean Pierre
dc.contributor.authorLALEVÉEE, Jacques
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2015
dc.identifier.issn0887-624X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20165
dc.description.abstractEnThis article reports on the presumably first use of iron complexes (FeC) as potential photocatalysts for controlled radical photopolymerization reactions (CRP2). Three compounds were designed and investigated. Good linear evolutions of the molecular weight (Mn) with the conversion were observed. A comparison was provided with a reference iridium (III) complex [Ir(ppy)3 where ppy stands for 2-phenylpyridine]. The on/off photopolymerization experiments highlight the presence of dormant species and a re-initiation on demand upon irradiation. This unique re-initiation property was used for the modification of surfaces (hydrophilic/hydrophobic properties) and surface patterning as well as the synthesis of a block co-polymer (PMMA-b-PBA). A comparative analysis of the behavior of these iron complexes in thermally and photochemically activated polymerization was provided. The chemical mechanisms were studied by steady state photolysis, laser flash photolysis, cyclic voltammetry, luminescence quenching, and electron spin resonance experiments. A catalytic cycle was proposed with two steps: (i) the oxidation of the FeC excited state by an alkyl halide and (ii) the reduction by the oxidized form (FeC°+) by an amine or the macroradicals leading to the regeneration of the catalyst.
dc.language.isoen
dc.publisherWiley
dc.title.enIron complexes as potential photocatalysts for controlled radical photopolymerizations: A tool for modifications and patterning of surfaces
dc.typeArticle de revue
dc.identifier.doi10.1002/pola.27896
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Polymer Science Part A: Polymer Chemistry
bordeaux.page702-713
bordeaux.volume54
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-01407225
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01407225v1
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