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<dc:title xml:lang="fr">Synthèse de ligands photosensibilisateurs de nanoparticules à base d'ions lanthanides pour des applications au diagnostic in vitro</dc:title>
<dcterms:alternative xml:lang="en">Synthesis of lanthanide-based nanoparticle photosensitizer ligands for in vitro diagnostic applications</dcterms:alternative>
<dc:subject xml:lang="fr">Nanoparticules</dc:subject>
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<dc:subject xml:lang="fr">Effet d'antenne</dc:subject>
<dc:subject xml:lang="fr">Luminescence</dc:subject>
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<dc:subject xml:lang="en">Lanthanides</dc:subject>
<dc:subject xml:lang="en">Antenna effect</dc:subject>
<dc:subject xml:lang="en">Luminescence</dc:subject>
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<dcterms:abstract xml:lang="fr">Cette thèse CIFRE est réalisée en collaboration entre le laboratoire SynPA de l’IPHC Strasbourg et l’entreprise Poly-Dtech, et financée par l’ANRT.La première partie de la thèse porte sur la synthèse de ligands photosensibilisateurs de nanoparticules à base d’ions lanthanides. Ces ligands sont utilisés pour rendre les nanoparticules ultra brillantes afin de pouvoir les utiliser comme marqueurs luminescents dans des applications variées d’analyse et d’imagerie, et notamment des applications de diagnostic in vitro. Les nanoparticules ont été titrées avec chaque ligand synthétisé dans le but de comparer leur efficacité d’effet d’antenne.La deuxième partie de ce travail porte sur l’optimisation de la synthèse des nanoparticules à base d’ions lanthanides. Afin d’améliorer leurs propriétés photo-physiques, notamment leur taille et leur brillance, diverses modifications ont été réalisées sur les conditions de synthèse. Finalement, les nanoparticules synthétisées ont été utilisées dans des systèmes « sandwich » anticorps – antigène –anticorps, mis en place pour des analyses de transfert d’énergie de type FRET en temps résolu.L’objectif était d’évaluer le potentiel de chaque nanoparticules en tant que donneur d’énergie.</dcterms:abstract>
<dcterms:abstract xml:lang="en">This CIFRE thesis is carried out in collaboration between the SynPA laboratory at IPHC Strasbourg and Poly-Dtech company, and funded by ANRT.The first part of the thesis focuses on the synthesis of photosensitizing ligands for lanthanide ion based nanoparticles. These ligands are used to give ultrabright nanoparticles for use as luminescentmarkers in various analysis and imaging applications, particularly in in vitro diagnostic applications.The nanoparticles were titrated with each synthesized ligand to compare their antenna effect efficiency. The second part of this work focuses on optimizing the synthesis of lanthanide ion-basednanoparticles. Various modifications were made on the synthesis conditions to improve their photophysicalproperties, including size and brightness. Finally, the synthesized nanoparticles were used insandwich systems of antibody-antigen-antibody for time-resolved FRET energy transfer analyses. Thegoal was to to evaluate the potential of each nanoparticle as energy donor.</dcterms:abstract>
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