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Synthèse d’oligomères de porphyrines reliées par liaison de coordination et études de leurs propriétés physico-­chimiques

Abstract : The goal of this thesis was to synthesize and characterize linear porphyrins assemblies linked by metal ions. The reaction of porphyrins bearing an external coordination group with platinum(II) ions led to the formation of new homodimers and new dyads. Electrochemical measurements demonstrated an increase in the electronic communication between the two subunits of the Pt-linked dimers compared to Pd-linked systems. In addition, an ultrafast energy transfer between the subunits was observed in the new dyads. Porphyrin monomers metalated at their periphery with palladium(II) and platinum(II) complexes were also prepared. Trimers and tetramers were obtained by reacting porphyrins with various external coordination sites with metal ions. With porphyrins bearing additional long alkyl chains, self assembly at the solid/liquid interface was also studied by STM. In particular, addition of metal ions to these self-assembled systems on HOPG led to linear porphyrin arrays.
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Hervé Dekkiche. Synthèse d’oligomères de porphyrines reliées par liaison de coordination et études de leurs propriétés physico-­chimiques. Autre. Université de Strasbourg, 2017. Français. ⟨NNT : 2017STRAF034⟩. ⟨tel-02917991⟩

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