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Article Dans Une Revue Dalton Transactions Année : 2022

Helicenic N-heterocyclic carbene copper(I) complex displaying circularly polarized blue fluorescence

Résumé

Enantiopure copper(I) chloride complexes bearing a monodentate N-(carbo[6]helicenyl)-NHC ligand have been prepared and characterized experimentally and computationally. Their high stability enables the stereochemistry to be probed by X-ray crystallography and NMR spectroscopy. The resolved enantiomeric complexes emit circularly polarized blue fluorescence with g(lum) ∼1.3 × 10(-3) in solution. The photophysical and chiroptical properties of these systems, with their helicene-centred origin, are similar to those of the organic helicene-benzimidazole precursor proligand, although the reverse axial chirality configuration is preferentially observed for the complex compared to the ligand.

Domaines

Chimie
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Dates et versions

hal-03798783 , version 1 (05-10-2022)

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Paternité - Pas d'utilisation commerciale

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Etienne S Gauthier, Dominika Kaczmarczyk, Samuel del Fré, Ludovic Favereau, Elsa Caytan, et al.. Helicenic N-heterocyclic carbene copper(I) complex displaying circularly polarized blue fluorescence. Dalton Transactions, 2022, 51 (40), pp.15571-15578. ⟨10.1039/d2dt01925f⟩. ⟨hal-03798783⟩
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