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Assemblages linéaires et cycliques d’unités fluorènes pour l’électronique organique : relations structure-propriétés

Abstract : Oligophenylenes constitute a major class of molecules in the design of organic semiconductors for optoelectronics applications. This work involves the synthesis and in-depth study of linear and cyclic derivatives of fluorene (a biphenyl rigidified by a methylene bridge), an essential building block in organic electronics. We focus our attention on the structure-property relationships of these π-conjugated systems. In a first part, within the framework of host materials for phosphorescent organic light-emitting diodes (PhOLEDs), we present a regioisomerism study of phenyl-fluorenes and phenyl-spirobifluorenes. Its results enabled the preparation of four pure hydrocarbon host materials, spirobifluorene dimers, used in high-performance blue PhOLEDs. In a second part, we take interest in the emerging field of molecular nanorings, cyclic objects presenting a singular nature of π-conjugation. After a bibliographical review covering cycloparaphenylenes and their properties, we present our studies regarding several examples of their bridged analogues: cycloparafluorenes.
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  • HAL Id : tel-02076334, version 1

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Lambert Sicard. Assemblages linéaires et cycliques d’unités fluorènes pour l’électronique organique : relations structure-propriétés. Chimie organique. Université Rennes 1, 2018. Français. ⟨NNT : 2018REN1S066⟩. ⟨tel-02076334⟩

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