Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties

Etienne S. Gauthier; Laura Abella; Nora Hellou; Benoît Darquié; Elsa Caytan; Thierry Roisnel; Nicolas Vanthuyne; Ludovic Favereau; Monika Srebro-Hooper; J. A.Gareth Williams; Jochen Autschbach; Jeanne Crassous

doi:10.1002/anie.202002387

Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties

Etienne S. Gauthier
, Laura Abella
, Nora Hellou
, Benoît Darquié
, Elsa Caytan
, Thierry Roisnel
, Nicolas Vanthuyne
, Ludovic Favereau
, Monika Srebro-Hooper
, J. A.Gareth Williams
, Jochen Autschbach
, Jeanne Crassous

Chemistry

Université de Rennes
SUNY Buffalo
Université Paris 13
Aix Marseille University
Jagiellonian University in Kraków
Durham University

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

The first enantiopure chiral-at-rhenium complexes of the form fac-ReX(CO)₃(:C^N) have been prepared, where :C^N is a helicene-N-heterocyclic carbene (NHC) ligand and X=Cl or I. These have complexes show strong changes in the emission characteristics, notably strongly enhanced phosphorescence lifetimes (reaching 0.7 ms) and increased circularly polarized emission (CPL) activity, as compared to their parent chiral models lacking the helicene unit. The halogen along with its position within the dissymmetric stereochemical environment strongly affect the photophysics of the complexes, particularly the phosphorescence quantum yield and lifetime. These results give fresh insight into fine tuning of photophysical and chiroptical properties of Re-NHC systems.

Original language	English
Pages (from-to)	8394-8400
Number of pages	7
Journal	Angewandte Chemie - International Edition
Volume	59
Issue number	22
DOIs	https://doi.org/10.1002/anie.202002387
State	Published - May 25 2020

Keywords

circularly polarized emission
helicenes
N-heterocyclic carbenes
phosphorescence
rhenium(I)

Access to Document

10.1002/anie.202002387

Cite this

Gauthier, E. S., Abella, L., Hellou, N., Darquié, B., Caytan, E., Roisnel, T., Vanthuyne, N., Favereau, L., Srebro-Hooper, M., Williams, J. A. G., Autschbach, J., & Crassous, J. (2020). Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties. Angewandte Chemie - International Edition, 59(22), 8394-8400. https://doi.org/10.1002/anie.202002387

@article{165eac0cd790431e933c8a2f624718ae,

title = "Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties",

abstract = "The first enantiopure chiral-at-rhenium complexes of the form fac-ReX(CO)3(:C\textasciicircum{}N) have been prepared, where :C\textasciicircum{}N is a helicene-N-heterocyclic carbene (NHC) ligand and X=Cl or I. These have complexes show strong changes in the emission characteristics, notably strongly enhanced phosphorescence lifetimes (reaching 0.7 ms) and increased circularly polarized emission (CPL) activity, as compared to their parent chiral models lacking the helicene unit. The halogen along with its position within the dissymmetric stereochemical environment strongly affect the photophysics of the complexes, particularly the phosphorescence quantum yield and lifetime. These results give fresh insight into fine tuning of photophysical and chiroptical properties of Re-NHC systems.",

keywords = "circularly polarized emission, helicenes, N-heterocyclic carbenes, phosphorescence, rhenium(I)",

author = "Gauthier, \{Etienne S.\} and Laura Abella and Nora Hellou and Beno{\^i}t Darqui{\'e} and Elsa Caytan and Thierry Roisnel and Nicolas Vanthuyne and Ludovic Favereau and Monika Srebro-Hooper and Williams, \{J. A.Gareth\} and Jochen Autschbach and Jeanne Crassous",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2020",

month = may,

day = "25",

doi = "10.1002/anie.202002387",

language = "English",

volume = "59",

pages = "8394--8400",

journal = "Angewandte Chemie - International Edition",

issn = "1433-7851",

publisher = "John Wiley and Sons Ltd",

number = "22",

}

Gauthier, ES, Abella, L, Hellou, N, Darquié, B, Caytan, E, Roisnel, T, Vanthuyne, N, Favereau, L, Srebro-Hooper, M, Williams, JAG, Autschbach, J & Crassous, J 2020, 'Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties', Angewandte Chemie - International Edition, vol. 59, no. 22, pp. 8394-8400. https://doi.org/10.1002/anie.202002387

Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties. / Gauthier, Etienne S.; Abella, Laura; Hellou, Nora et al.
In: Angewandte Chemie - International Edition, Vol. 59, No. 22, 25.05.2020, p. 8394-8400.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes

T2 - The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties

AU - Gauthier, Etienne S.

AU - Abella, Laura

AU - Hellou, Nora

AU - Darquié, Benoît

AU - Caytan, Elsa

AU - Roisnel, Thierry

AU - Vanthuyne, Nicolas

AU - Favereau, Ludovic

AU - Srebro-Hooper, Monika

AU - Williams, J. A.Gareth

AU - Autschbach, Jochen

AU - Crassous, Jeanne

PY - 2020/5/25

Y1 - 2020/5/25

N2 - The first enantiopure chiral-at-rhenium complexes of the form fac-ReX(CO)3(:C^N) have been prepared, where :C^N is a helicene-N-heterocyclic carbene (NHC) ligand and X=Cl or I. These have complexes show strong changes in the emission characteristics, notably strongly enhanced phosphorescence lifetimes (reaching 0.7 ms) and increased circularly polarized emission (CPL) activity, as compared to their parent chiral models lacking the helicene unit. The halogen along with its position within the dissymmetric stereochemical environment strongly affect the photophysics of the complexes, particularly the phosphorescence quantum yield and lifetime. These results give fresh insight into fine tuning of photophysical and chiroptical properties of Re-NHC systems.

AB - The first enantiopure chiral-at-rhenium complexes of the form fac-ReX(CO)3(:C^N) have been prepared, where :C^N is a helicene-N-heterocyclic carbene (NHC) ligand and X=Cl or I. These have complexes show strong changes in the emission characteristics, notably strongly enhanced phosphorescence lifetimes (reaching 0.7 ms) and increased circularly polarized emission (CPL) activity, as compared to their parent chiral models lacking the helicene unit. The halogen along with its position within the dissymmetric stereochemical environment strongly affect the photophysics of the complexes, particularly the phosphorescence quantum yield and lifetime. These results give fresh insight into fine tuning of photophysical and chiroptical properties of Re-NHC systems.

KW - circularly polarized emission

KW - helicenes

KW - N-heterocyclic carbenes

KW - phosphorescence

KW - rhenium(I)

UR - https://www.scopus.com/pages/publications/85083188552

U2 - 10.1002/anie.202002387

DO - 10.1002/anie.202002387

M3 - Article

C2 - 32167646

AN - SCOPUS:85083188552

SN - 1433-7851

VL - 59

SP - 8394

EP - 8400

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 22

ER -

Long-Lived Circularly Polarized Phosphorescence in Helicene-NHC Rhenium(I) Complexes: The Influence of Helicene, Halogen, and Stereochemistry on Emission Properties

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this