Sequential Proton-Coupled Electron Transfer Mediates Excited-State Deactivation of a Eumelanin Building Block.

@article{Nogueira2017SequentialPE,
  title={Sequential Proton-Coupled Electron Transfer Mediates Excited-State Deactivation of a Eumelanin Building Block.},
  author={J. Nogueira and A. Corani and A. El Nahhas and A. Pezzella and M. d'Ischia and L. Gonz{\'a}lez and V. Sundstr{\"o}m},
  journal={The journal of physical chemistry letters},
  year={2017},
  volume={8 5},
  pages={
          1004-1008
        }
}
Skin photoprotection is commonly believed to rely on the photochemistry of 5,6-dihydroxyindole (DHI)- and 5,6-dihydroxyindole-2-carboxylic acid (DHICA)-based eumelanin building blocks. Attempts to elucidate the underlying excited-state relaxation mechanisms have been partly unsuccessful due to the marked instability to oxidation. We report a study of the excited-state deactivation of DHI using steady-state and time-resolved fluorescence accompanied by high-level quantum-chemistry calculations… Expand
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Dynamics of electronically excited states in the eumelanin building block 5,6-dihydroxyindole.
Effect of microsolvation on the non-radiative decay of the eumelanin monomer.
Non-radiative decay of an eumelanin monomer: to be or not to be planar.
Solvent reorganization triggers photo-induced solvated electron generation in phenol.
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