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<dcterms:abstract xml:lang="fr">Ce projet de thèse s’inscrit dans la démarche de conception et d’étude de fluorophores d’origine biosourcée et/ou bioinspirée, un champ encore peu exploré dans le contexte de la photoluminescence. L’objectif principal était de développer de nouveaux fluorophores, tout en établissant des études de structures-propriétés permettant la compréhension de leurs propriétés photophysiques. Les travaux menés ont porté sur différents squelettes moléculaires (β-carboline et émodine), des motifs d’intérêt connus mais peu exploités pour leurs propriétés de fluorescence. Un axe particulier a conduit à la mise au point de nouveaux fluorophores dérivés du squelette pyrazoloanthrone, exploré grâce à une plateforme moléculaire sélective offrant une modulation fine des propriétés optiques. Cette approche a ainsi ouvert la voie à de nouvelles stratégies de synthèse dans l’ingénierie de fluorophores issus de ressources renouvelables.</dcterms:abstract>
<dcterms:abstract xml:lang="en">This thesis project is part of the design and study of bio-based and/or bio-inspired fluorophores, a field that remains largely unexplored in the context of photoluminescence. The main objective was to develop new fluorophores, while establishing structure-property studies to understand their photophysical properties. The work focused on different molecular skeletons (β-carboline and emodin) of motifs that are known but little exploited for their fluorescence properties. A particular focus led to the development of new fluorophores derived from the pyrazoloanthrone skeleton, explored using a selective molecular platform offering fine modulation of optical properties. This approach has paved the way for new synthesis strategies in the engineering of fluorophores derived from renewable resources.</dcterms:abstract>
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