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Helical donor-acceptor platinum complexes displaying dual luminescence and near-infrared circularly polarized luminescence

Abstract : A series of chiral platina[5]helicenes displaying dual luminescence, i.e., fluorescence between 450 and 600 nm and red/NIR phosphorescence between 700 and 900 nm, has been synthesised, characterised and studied by first-principle calculations. This unusual behavior has been attributed to limited electronic interactions between the d orbitals of the metal and the pi-orbitals of the organic ligand on the excited-state. Accordingly, the electron richness of the donor group on the helical ligand does not affect the energy of the phosphorescence process but does play a role on its efficiency. Interestingly, near-infrared circularly polarized luminescence can be obtained for the three complexes with dissymmetry factors up to 3 x 10(-3) at 750 nm.
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https://hal.archives-ouvertes.fr/hal-03367783
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, October 6, 2021 - 1:52:12 PM
Last modification on : Tuesday, October 19, 2021 - 10:59:31 PM

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Pablo Vazquez-Dominguez, Oceane Journaud, Nicolas Vanthuyne, Denis Jacquemin, Ludovic Favereau, et al.. Helical donor-acceptor platinum complexes displaying dual luminescence and near-infrared circularly polarized luminescence. Dalton Transactions, Royal Society of Chemistry, 2021, ⟨10.1039/d1dt02184b⟩. ⟨hal-03367783⟩

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