Designing Artificial 3D Helicates: Unprecedented Self-Assembly of Homo-octanuclear Tetrapods with Europium

Abstract : Herein, we report on the rational design, preparation and characterization of a novel homo-octanuclear helicate, which results from a spatial extension of the central tetranuclear platform. The 3D supramolecular assembly is obtained by complexing europium(III) with a new hexatopic tripodal ligand. The isolated octanuclear helicate is fully characterized by different methods clearly evidencing the structure predicted with molecular modelling. The ligand preorganization plays a crucial role in a successful self-assembly process and induces the formation of a well-defined triple-stranded helical structure. This prototypal octanuclear edifice accommodating functional lanthanides within a 3D scaffold offers attractive perspectives for further applications.
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Submitted on : Tuesday, March 19, 2019 - 9:29:40 AM
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Soumaila Zebret, Eliane Vögele, Tomas Klumpler, Josef Hamacek. Designing Artificial 3D Helicates: Unprecedented Self-Assembly of Homo-octanuclear Tetrapods with Europium. Chemistry - A European Journal, Wiley-VCH Verlag, 2015, 21 (18), pp.6695-6699. ⟨10.1002/chem.201500006⟩. ⟨hal-02072315⟩

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