Publikation: Substituent effects on triplet yields in aminoanthraquinones : radiationless deactivation via intermolecular and intramolecular hydrogen bonding
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1988
Autor:innen
Ritter, J.
Borst, Hans-Ulrich
Lindner, T.
Hauser, Manfred
Brosig, Stefan
Bredereck, Karl
Kühn, Dietmar
Kelemen, J.
Kramer, Horst E. A.
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Journal of Photochemistry and Photobiology A. 1988, 41(2), pp. 227-244. ISSN 1010-6030. Available under: doi: 10.1016/1010-6030(88)80040-6
Zusammenfassung
The dependence of the triplet quantum yields of monosubstituted and disubstituted aminoanthraquinones on the number of substituents and on their position was studied. Using fluorescence lifetimes, fluorescence quantum yields and triplet quantum yields, the rate constants of the intersystem crossing into the triplet state and of the internal conversion into the ground state were evaluated. For monosubstituted aminoanthraquinones the individual contributions of various mechanisms to the internal conversion have been estimated. In quenching the excited singlet state, intermolecular hydrogen bonding to the solvent is more efficient by an order of magnitude than intramolecular hydrogen bonding.
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540 Chemie
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RITTER, J., Hans-Ulrich BORST, T. LINDNER, Manfred HAUSER, Stefan BROSIG, Karl BREDERECK, Ulrich STEINER, Dietmar KÜHN, J. KELEMEN, Horst E. A. KRAMER, 1988. Substituent effects on triplet yields in aminoanthraquinones : radiationless deactivation via intermolecular and intramolecular hydrogen bonding. In: Journal of Photochemistry and Photobiology A. 1988, 41(2), pp. 227-244. ISSN 1010-6030. Available under: doi: 10.1016/1010-6030(88)80040-6BibTex
@article{Ritter1988Subst-9611,
year={1988},
doi={10.1016/1010-6030(88)80040-6},
title={Substituent effects on triplet yields in aminoanthraquinones : radiationless deactivation via intermolecular and intramolecular hydrogen bonding},
number={2},
volume={41},
issn={1010-6030},
journal={Journal of Photochemistry and Photobiology A},
pages={227--244},
author={Ritter, J. and Borst, Hans-Ulrich and Lindner, T. and Hauser, Manfred and Brosig, Stefan and Bredereck, Karl and Steiner, Ulrich and Kühn, Dietmar and Kelemen, J. and Kramer, Horst E. A.}
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<dcterms:abstract xml:lang="eng">The dependence of the triplet quantum yields of monosubstituted and disubstituted aminoanthraquinones on the number of substituents and on their position was studied. Using fluorescence lifetimes, fluorescence quantum yields and triplet quantum yields, the rate constants of the intersystem crossing into the triplet state and of the internal conversion into the ground state were evaluated. For monosubstituted aminoanthraquinones the individual contributions of various mechanisms to the internal conversion have been estimated. In quenching the excited singlet state, intermolecular hydrogen bonding to the solvent is more efficient by an order of magnitude than intramolecular hydrogen bonding.</dcterms:abstract>
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