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<dc:title xml:lang="fr">Métallopolymères photoactifs dynamiques : synthèse, caractérisation et gels photosensibles</dc:title>
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<dc:subject xml:lang="fr">Ortho-fluoroazobenzène</dc:subject>
<dc:subject xml:lang="fr">Photoisomérisation</dc:subject>
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<dc:subject xml:lang="fr">Thiazolothiazole photo/électrochromisme</dc:subject>
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<dc:subject xml:lang="en">Ortho-fluoroazobenzene</dc:subject>
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<dc:subject xml:lang="en">Gel-sol transition</dc:subject>
<dc:subject xml:lang="en">Thiazolothiazole, photo/electrochromism</dc:subject>
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<dcterms:abstract xml:lang="fr">Un ligand à base d’ortho-fluoroazobenzène (Azo-F), capable d’un photochangement réversible sous lumière visible, a été synthétisé et caractérisé. Ses propriétés photophysiques, son analyse computationnelle, son rendement quantique d’isomérisation et sa cinétique ont été étudiés. Deux ligands solubilisant connus (L1 et L2) ont aussi été améliorés. Des métallopolymères issus d’Azo-F combiné à L1 ou L2 et coordonnés avec Zn2+, Co2+ ou Eu3+ ont été examinés. Leurs comportements optiques, capacités de gélification et morphologies de xérogels ont été analysés par UV-Vis, MEB et EDS. Cependant, un gel métallopolymérique présente une transition gel-sol réversible sous lumière visible, accompagnée d’un réseau fibreux sous forme xérogel. Enfin, un ligand à base de thiazolo[5,4-d]thiazole a été préparé, montrant un solvatofluorochromisme ainsi que des propriétés photochromiques et électrochromiques. Les métallopolymères correspondants avec Zn2+ ou Co2+ révèlent des réponses photochromiques distinctes et les films PMMA montrent une photochromie réversible.</dcterms:abstract>
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