Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding

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 int...

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Autores principales: Krystkowiak, Ewa, Dobek, Krzysztof, Maciejewski, Andrzej
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4200807/
https://www.ncbi.nlm.nih.gov/pubmed/25244014
http://dx.doi.org/10.3390/ijms150916628
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author Krystkowiak, Ewa
Dobek, Krzysztof
Maciejewski, Andrzej
author_facet Krystkowiak, Ewa
Dobek, Krzysztof
Maciejewski, Andrzej
author_sort Krystkowiak, Ewa
collection PubMed
description 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 S(1)-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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spelling pubmed-42008072014-10-17 Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding Krystkowiak, Ewa Dobek, Krzysztof Maciejewski, Andrzej Int J Mol Sci Article 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 S(1)-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. MDPI 2014-09-19 /pmc/articles/PMC4200807/ /pubmed/25244014 http://dx.doi.org/10.3390/ijms150916628 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Krystkowiak, Ewa
Dobek, Krzysztof
Maciejewski, Andrzej
Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding
title Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding
title_full Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding
title_fullStr Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding
title_full_unstemmed Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding
title_short Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding
title_sort deactivation of 6-aminocoumarin intramolecular charge transfer excited state through hydrogen bonding
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4200807/
https://www.ncbi.nlm.nih.gov/pubmed/25244014
http://dx.doi.org/10.3390/ijms150916628
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AT maciejewskiandrzej deactivationof6aminocoumarinintramolecularchargetransferexcitedstatethroughhydrogenbonding

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