Issue 12, 2021

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

Abstract

3,3′-Bipyridine ligand B was reacted with pre-assembled [Cu22-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, [Cu22-dppm)22-X)] bimetallic connecting nodes presenting a potential coordination angle of ca. 120° are generated, which lead upon reaction with connecting ligand B to the selective formation of new tetranuclear metallacycles CX. 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.

Graphical abstract: Self-assembled luminescent Cu(i) tetranuclear metallacycles based on 3,3′-bipyridine ligands

Supplementary files

Article information

Article type
Research Article
Submitted
07 4月 2021
Accepted
11 5月 2021
First published
17 5月 2021

Org. Chem. Front., 2021,8, 2893-2902

Self-assembled luminescent Cu(I) tetranuclear metallacycles based on 3,3′-bipyridine ligands

F. Moutier, J. Schiller, G. Calvez and C. Lescop, Org. Chem. Front., 2021, 8, 2893 DOI: 10.1039/D1QO00538C

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