Strong circularly polarized luminescence intramolecular excited-state symmetry-breaking charge separation

Trans -1,2-di(1-pyrenylamino)cycloxexane was found to display circularly polarized excimer emission ( g lum = 0.016) both in polar and non-polar solvents that is assigned to charge separation symmetry breaking on the basis of its large transition state dipole moment (12.1 D). Unexpected excited-stat...

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Published in:Chemical communications (Cambridge, England) England), 2023-06, Vol.59 (51), p.7963-7966
Main Authors: Álvaro-Martins, Maria João, Billiaux, Chloé, Godard, Pascale, Oda, Reiko, Raffy, Guillaume, Bassani, Dario M
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Summary:Trans -1,2-di(1-pyrenylamino)cycloxexane was found to display circularly polarized excimer emission ( g lum = 0.016) both in polar and non-polar solvents that is assigned to charge separation symmetry breaking on the basis of its large transition state dipole moment (12.1 D). Unexpected excited-state symmetry breaking leads to an emissive charge-separated excimer in a simple bis-pyrene chromophore.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc01802d