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

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., Cordier, M., Vanthuyne, N., Williams, J. G., & 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
• Public URL: https://durham-repository.worktribe.com/output/1191140