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Journal articles
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) (: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.
Cited literature [30 references]
https://hal-univ-rennes1.archives-ouvertes.fr/hal-02533163
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, May 12, 2020 - 11:21:13 AM
Last modification on : Tuesday, October 20, 2020 - 3:37:42 AM
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, May 12, 2020 - 11:21:13 AM
Last modification on : Tuesday, October 20, 2020 - 3:37:42 AM
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Gauthier et al-2020-Long‐Liv...
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