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Zebret S., Vogele E., Klumpler T. and Hamacek J.

Designing artificial 3D helicates : unprecedented self-assembly of homo-octanuclear tetrapods with europium

Chemistry - A European Journal (2015) 21 (18) 6695-6696 - doi : 10.1002/chem.201500006

par Frapart - publié le

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.