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     <dc:title xml:lang="fr">Design de matériaux hôtes à haut état triplet pour des applications dans des diodes organiques électrophosphorescentes</dc:title>
     <dcterms:alternative xml:lang="en">Design of high triplet state level host materials for application in phosphorescent organic light emitting diodes</dcterms:alternative>
     <dc:subject xml:lang="fr">Électronique organique</dc:subject><dc:subject xml:lang="fr">synthèse organique</dc:subject><dc:subject xml:lang="fr">propriétés physicochimiques</dc:subject><dc:subject xml:lang="fr">dispositif électroluminescent (OLED</dc:subject><dc:subject xml:lang="fr">PhOLED)</dc:subject><dc:subject xml:lang="fr">phosphorescence</dc:subject>
     <dc:subject xml:lang="en">Organic electronics</dc:subject><dc:subject xml:lang="en">organic synthesis</dc:subject><dc:subject xml:lang="en">physicochemical properties</dc:subject><dc:subject xml:lang="en">electroluminescent device (OLED</dc:subject><dc:subject xml:lang="en">PhOLED)</dc:subject><dc:subject xml:lang="en">phosphorescence</dc:subject><tef:sujetRameau><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="077071875">Diodes électroluminescentes organiques</tef:elementdEntree><tef:subdivision autoriteSource="Sudoc" type="subdivisionDeForme" autoriteExterne="027253139">Thèses et écrits académiques</tef:subdivision>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="149504454">Électronique organique</tef:elementdEntree><tef:subdivision autoriteSource="Sudoc" type="subdivisionDeForme" autoriteExterne="027253139">Thèses et écrits académiques</tef:subdivision>
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     <dcterms:abstract xml:lang="fr">Les diodes organiques électroluminescentes (OLEDs), dans lesquelles l’émission de couleur provient de la fluorescence de molécules organiques, représentent une évolution de la technologie des diodes électroluminescentes (LED) classiques. Les OLEDs phosphorescentes (PhOLEDs) permettre d’atteindre des rendements plus élevée que les OLEDs, en utilisant comme couche émissive un couple « matériau organique/dopant phosphorescent ». Ce travail porte sur la synthèse et l'étude de nouvelles molécules à haut état triplet, pour des applications comme matrices hôtes dans des PhOLEDs bleues. Après une introduction à ce domaine novateur, la synthèse de nouveaux semi-conducteurs organiques dérivés de l’architecture 2π-1spiro et l’analyse détaillée des propriétés physico-chimiques sont présentées. Les performances de PhOLEDs bleues utilisant ces nouvelles matrices sont alors décrites et montrent l’intérêt du design de ces nouvelles molécules hôtes.</dcterms:abstract>
     <dcterms:abstract xml:lang="en">Organic light emitting diodes (OLEDs) in which light is emitted from fluorescence pathway of an organic molecule, represent an evolution of the light emitting diode (LED) technology. Phosphorescent OLEDs (PhOLEDs) which combine in the emitting layer an “organic host doped with a guest phosphor”, may reach theoretically higher performances than OLEDs. This work is focused on the synthesis and the study of new organic compounds with high triplet state energy, which will be used as host material in blue PhOLEDs. After an introduction of this important field of organic electronics, the synthesis of new organic semi-conductors based on the 2π-1spiro architecture and the detailed analysis of their physicochemical properties through a structure/properties relationship study are presented. The performances of blue PhOLEDs using these matrices are then described and show the great interest of the new host designs.</dcterms:abstract>
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       <tef:nom>Thiery</tef:nom>
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