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

Crassous, Jeanne; Gauthier, Etienne S.; Kaczmarczyk, Dominika; Fré, Samuel Del; Favereau, Ludovic; Caytan, Elsa; Cordier, Marie; Vanthuyne, Nicolas; Williams, J.A. Gareth; Srebro-Hooper, Monika

doi:10.1039/d2dt01925f

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

Crassous, Jeanne; Gauthier, Etienne S.; Kaczmarczyk, Dominika; Fré, Samuel Del; Favereau, Ludovic; Caytan, Elsa; Cordier, Marie; Vanthuyne, Nicolas; Williams, J.A. Gareth; Srebro-Hooper, Monika

Authors

Jeanne Crassous

Etienne S. Gauthier

Dominika Kaczmarczyk

Samuel Del Fré

Ludovic Favereau

Elsa Caytan

Marie Cordier

Nicolas Vanthuyne

Professor Gareth Williams j.a.g.williams@durham.ac.uk
Professor

Monika Srebro-Hooper

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 glum ~ 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 observed for the complex compared to the ligand.

Citation

Crassous, J., Gauthier, E. S., Kaczmarczyk, D., Fré, S. D., Favereau, L., Caytan, E., …Srebro-Hooper, M. (2022). Helicenic N-heterocyclic carbene copper(I) complex displaying circularly polarized blue fluorescence. Dalton Transactions, 51(40), 15571-15578. https://doi.org/10.1039/d2dt01925f

Journal Article Type	Article
Acceptance Date	Sep 17, 2022
Online Publication Date	Sep 19, 2022
Publication Date	Oct 28, 2022
Deposit Date	Sep 26, 2022
Publicly Available Date	Sep 26, 2022
Journal	Dalton Transactions
Print ISSN	1477-9226
Electronic ISSN	1477-9234
Publisher	Royal Society of Chemistry
Peer Reviewed	Peer Reviewed
Volume	51
Issue	40
Pages	15571-15578
DOI	https://doi.org/10.1039/d2dt01925f