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

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-03798783
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, October 5, 2022 - 2:28:15 PM
Last modification on : Thursday, October 6, 2022 - 3:55:42 AM

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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, ⟨10.1039/d2dt01925f⟩. ⟨hal-03798783⟩

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