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  1. Circularly polarized luminescence from Tb(III) interacting with chiral polyether macrocycles
    Alexandre Homberg, Frederica Navazio, Antoine Le Tellier, Francesco Zinna, Alexandre Fürstenberg, Céline Besnard, Lorenzo Di Bari, Jérôme Lacour
    Dalton Trans. 2022, 51, 16479-16485

A straightforward two-step synthesis protocol affords a series of chiral amide-based bis-pyridine substituted polyether macrocycles. One ligand is particularly able to complex Terbium(III) ion spontaneously. Upon complexation, interesting chiroptical properties are observed both in absorbance (ECD) and in fluorescence (CPL). In ligand-centered electronic circular dichroism, a sign inversion coupled with a signal enhancement is measured; while an easily detectable metal-centered circularly polarized luminescence with a glum of 0.05 is obtained for the main 5D47F5 terbium transition. The coordination mode and structure of the complex was studied using different analysis methods (NMR analysis, spectrophotometric titration and solid-state elucidation)

DOI: 10.1039/D2DT02627A 

open archive unige:164878