Issue 3, 2013
From the journal:

Photochemical & Photobiological Sciences

An intermolecular hydrogen-bonding effect on spectral and photophysical properties of 6-aminocoumarin in protic solvents

Ewa Krystkowiak,*a   Krzysztof Dobekb  and  Andrzej Maciejewskiac  

* Corresponding authors

a Department of Chemistry, Adam Mickiewicz University, Umultowska 89B, 61-614 Poznań, Poland
E-mail: ewakryst@amu.edu.pl
Fax: +48 61 8296761
Tel: +48 61 8296761

b Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

c Center for Ultrafast Laser Spektroscopy, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

Abstract

The paper presents results of the spectral (absorption and emission) and photophysical study of 6-aminocoumarin (6AC) in strong protic solvents with different hydrogen-bond acidity. The measurements of the fluorescence lifetime and quantum yield clearly show that in protic solvents intermolecular hydrogen-bonding interactions between solute and solvent molecules facilitate the nonradiative processes. It is suggested that in these solvents very efficient internal conversion due to intermolecular hydrogen-bonding is induced. A large isotope effect is found for 6AC in deuterated water.

Graphical abstract: An intermolecular hydrogen-bonding effect on spectral and photophysical properties of 6-aminocoumarin in protic solvents

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Article information

DOI
https://doi.org/10.1039/C2PP25288K
Article type
Paper
Submitted
18 Aug 2012
Accepted
09 Nov 2012
First published
12 Nov 2012

Photochem. Photobiol. Sci., 2013,12, 446-455

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An intermolecular hydrogen-bonding effect on spectral and photophysical properties of 6-aminocoumarin in protic solvents

E. Krystkowiak, K. Dobek and A. Maciejewski, Photochem. Photobiol. Sci., 2013, 12, 446 DOI: 10.1039/C2PP25288K

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