Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence

Crassous, J.; Hellou, N.; Srebro-Hooper, M.; Favereau, L.; Zinna, F.; Caytan, E.; Toupet, L.; Dorcet, V.; Jean, M.; Vanthuyne, N.; Williams, J.A.G.; Di Bari, L.; Autschbach, J.

doi:10.1002/anie.201704263

Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence

Crassous, J.; Hellou, N.; Srebro-Hooper, M.; Favereau, L.; Zinna, F.; Caytan, E.; Toupet, L.; Dorcet, V.; Jean, M.; Vanthuyne, N.; Williams, J.A.G.; Di Bari, L.; Autschbach, J.

Authors

J. Crassous

N. Hellou

M. Srebro-Hooper

L. Favereau

F. Zinna

E. Caytan

L. Toupet

V. Dorcet

M. Jean

N. Vanthuyne

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

L. Di Bari

J. Autschbach

Abstract

A fused pi-helical N-heterocyclic (NHC) system has been prepared and examined through its diastereoisomerically pure cycloiridiated complexes. The latter display light-green phosphorescence with i) unusually long lifetimes and ii) circular polarization that depends on both the helical-NHC P/M and the iridium delta/lambda stereochemistry. These unprecedented features are attributed to extended pi-conjugation within helical carbenic ligand and efficient helicene-NHC-Ir interaction.

Citation

Crassous, J., Hellou, N., Srebro-Hooper, M., Favereau, L., Zinna, F., Caytan, E., …Autschbach, J. (2017). Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence. Angewandte Chemie International Edition, 56(28), 8236-8239. https://doi.org/10.1002/anie.201704263

Journal Article Type	Article
Acceptance Date	May 19, 2017
Online Publication Date	Jun 27, 2017
Publication Date	Jul 3, 2017
Deposit Date	May 22, 2017
Publicly Available Date	Jun 12, 2018
Journal	Angewandte Chemie International Edition
Print ISSN	1433-7851
Electronic ISSN	1521-3773
Publisher	Wiley
Peer Reviewed	Peer Reviewed
Volume	56
Issue	28
Pages	8236-8239
DOI	https://doi.org/10.1002/anie.201704263

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Copyright Statement
This is the peer reviewed version of the following article: Crassous, J., Hellou, N., Srebro-Hooper, M., Favereau, L., Zinna, F., Caytan, E., Toupet, L., Dorcet, V., Jean, M., Vanthuyne, N., Williams, J. A. G., Di Bari, L. & Autschbach, J. (2017). Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence. Angewandte Chemie International Edition 56 (28): 8236-8239, which has been published in final form at https://doi.org/10.1002/anie.201704263. This article may be used for non-commercial purposes in accordance With Wiley-VCH Terms and Conditions for self-archiving.