2. Academic Validation
  3. Deactivation of 6-aminocoumarin intramolecular charge transfer excited state through hydrogen bonding

Deactivation of 6-aminocoumarin intramolecular charge transfer excited state through hydrogen bonding

  • Int J Mol Sci. 2014 Sep 19;15(9):16628-48. doi: 10.3390/ijms150916628.
Ewa Krystkowiak 1,  Krzysztof Dobek 2,  Andrzej Maciejewski 3
Affiliations

Affiliations

  • 1 Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, Poznań 61-614, Poland. ewakryst@amu.edu.pl.
  • 2 Faculty of Physics, Adam Mickiewicz University in Poznań, Umultowska 85, Poznań 61-614, Poland. dobas@amu.edu.pl.
  • 3 Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, Poznań 61-614, Poland. iwonam@amu.edu.pl.
PMID: 25244014 DOI: 10.3390/ijms150916628
Abstract

This paper presents results of the spectral (absorption and emission) and photophysical study of 6-aminocoumarin (6AC) in various aprotic hydrogen-bond forming Solvents. It was established that solvent polarity as well as hydrogen-bonding ability influence solute properties. The hydrogen-bonding interactions between S1-electronic excited solute and solvent molecules were found to facilitate the nonradiative deactivation processes. The energy-gap dependence on radiationless deactivation in aprotic Solvents was found to be similar to that in protic Solvents.

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