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Article Dans Une Revue Organic Chemistry Frontiers Année : 2021

Self-assembled luminescent Cu(i) tetranuclear metallacycles based on 3,3 '-bipyridine ligands

Résumé

3,3'-Bipyridine ligand B was reacted with pre-assembled [Cu-2(mu(2)-dppm)(2)] Cu(I) bimetallic flexible precursor A according to coordination-driven supramolecular chemistry synthetic principles. Outcomes obtained revealed the necessity to formally introduce bridging halide X ions (X = Cl, Br or I) in order to conduct selectively and successfully coordination-driven supramolecular syntheses. Therefore, [Cu-2(mu(2)-dppm)(2)(mu(2)-X)] bimetallic connecting nodes presenting a potential coordination angle of ca. 120 degrees are generated, which lead upon reaction with connecting ligand B to the selective formation of new tetranuclear metallacycles C-X. These derivatives are luminescent in the solid-state at room temperature with high emission quantum yields and a study of the temperature dependence of their photophysical properties was conducted, suggesting a ligand B centered triplet origin for their luminescence.

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Dates et versions

hal-03245243 , version 1 (21-06-2021)

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Florent Moutier, Jana Schiller, Guillaume Calvez, Christophe Lescop. Self-assembled luminescent Cu(i) tetranuclear metallacycles based on 3,3 '-bipyridine ligands. Organic Chemistry Frontiers, 2021, 8 (12), pp.2893-2902. ⟨10.1039/d1qo00538c⟩. ⟨hal-03245243⟩
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