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     <dc:title xml:lang="fr">Nanocomposites hybrides organiques-inorganiques luminescents contenant des clusters octaédriques de molybdène ou de rhénium et des luminophores organiques</dc:title>
     <dcterms:alternative xml:lang="en">Luminescent organic-inorganic hybrid nanocomposites containing octahedral molybdenum or rhenium clusters and organic luminophores</dcterms:alternative>
     <dc:subject xml:lang="fr">clusters métalliques</dc:subject><dc:subject xml:lang="fr">luminescence</dc:subject><dc:subject xml:lang="fr">matériaux hybrides</dc:subject><dc:subject xml:lang="fr">écriture optique</dc:subject><dc:subject xml:lang="fr">transfert d'énergie</dc:subject>
     <dc:subject xml:lang="en">metal clusters</dc:subject><dc:subject xml:lang="en">luminescence</dc:subject><dc:subject xml:lang="en">hybrid materials</dc:subject><dc:subject xml:lang="en">optical writing</dc:subject><dc:subject xml:lang="en">energy transfer</dc:subject><tef:sujetRameau><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="034762590">Matériaux hybrides</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027859762">Luminescence</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027816893">Transfert d'énergie</tef:elementdEntree>
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     <dcterms:abstract xml:lang="fr">Les matériaux organiques, inorganiques et hybrides luminescents font l'objet d'études actives de la part d'un grand nombre de groupes de la communauté scientifique mondiale. Les complexes octaédriques de molybdène et de rhénium, dont la formule générale peut être exprimée comme [{M₆X₈}L₆]ⁿ, où M est le métal, X et L sont les ligands des sphères intérieure et extérieure du complexe, constituent l'une des classes de composés prometteuses pour la création de tels matériaux. Les complexes de cette composition possèdent une absorption dans le domaine spectral de l'ultraviolet et du visible, jusqu'à 550 nm. Leur combinaison avec des composés luminescents dans cette gamme peut entraîner une modification significative des propriétés spectroscopiques et photophysiques du matériau résultant, non seulement en raison de la combinaison des spectres d'émission, mais aussi en raison du transfert d'énergie entre les deux centres de luminescence. Les luminophores organiques bleus peuvent être l'un des candidats appropriés pour une telle combinaison. Dans le présent travail, nous avons combiné plusieurs complexes octaédriques de molybdène et de rhénium avec des dérivés d'anthracène et de tétraphényléthylène en utilisant des approches ioniques et supramoléculaires. Dans les composés hybrides obtenus, un transfert d'énergie efficace est observé. L'incorporation de ces hybrides dans une matrice de PMMA entraîne la formation de nanocomposites luminescents qui conviennent aux applications d'écriture optique.</dcterms:abstract>
     <dcterms:abstract xml:lang="en">Luminescent organic, inorganic and hybrid materials are the subject of active study for a large number of groups among the world scientific community. One of the promising classes of compounds for the creation of such materials are octahedral cluster complexes of molybdenum and rhenium, the general formula of which can be expressed as [{M₆X₈}L₆]ⁿ, where M is the metal, X and L are the ligands of the inner and outer spheres of the complex. Complexes of such composition possess absorption in the ultraviolet and visible spectral range, up to 550 nm. Their combination with compounds luminescent in this range can lead to a significant modification of spectroscopic and photophysical properties of the resulting material not only due to the combination of emission spectra, but also because of the energy transfer between the two luminescence centers. Blue organic luminophores may be one of the suitable candidates for such a combination. In the present work, we have combined several octahedral cluster complexes of molybdenum and rhenium with anthracene and tetraphenylethylene derivatives using ionic and supramolecular approaches. In the obtained hybrid compounds, an effective energy transfer is observed. The incorporation of these hybrids into PMMA matrix results in the formation of luminescent nanocomposites that are suitable for optical writing applications.</dcterms:abstract>
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       <tef:nom>Kashnik</tef:nom>
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