Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes
1
Max-Planck-Institut für Bioanorganische Chemie, P.O. Box 101365, D-45413 Mülheim an der Ruhr, Germany.
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2
Chemical Research Center, Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
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Publication type: Journal Article
Publication date: 2010-08-01
scimago Q2
wos Q2
SJR: 0.694
CiteScore: 7.8
Impact factor: 4.7
ISSN: 10106030, 18732666
General Chemistry
General Chemical Engineering
General Physics and Astronomy
Abstract
The properties of triplet-excited trans -4-hydroxy-4′-nitrostilbene were studied by photochemical means. This species produces singlet molecular oxygen with a quantum yield of Φ Δ = 0.4 in benzene and 0.05 in acetonitrile. Population of the triplet state was also detected by flash photolysis. The triplet yield is substantial in benzene or toluene and small in polar solvents. The major photoprocess is trans → cis isomerization, whose quantum yield is Φ t-c = 0.45 in benzene and smaller in more polar media. The effects of solvent polarity on the triplet reactivity were revealed. For trans - 4-hydroxy-2′,4′-dinitrostilbene, Φ Δ and Φ t-c are much smaller. The photoreaction to the corresponding hydroxyphenylisatogen was examined and mechanistic aspects were discussed.
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Görner H. et al. Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes // Journal of Photochemistry and Photobiology A: Chemistry. 2010. Vol. 214. No. 2-3. pp. 188-193.
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Görner H., Megyesi M., Miskolczy Z., Biczók L. Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes // Journal of Photochemistry and Photobiology A: Chemistry. 2010. Vol. 214. No. 2-3. pp. 188-193.
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TY - JOUR
DO - 10.1016/j.jphotochem.2010.06.025
UR - https://doi.org/10.1016/j.jphotochem.2010.06.025
TI - Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes
T2 - Journal of Photochemistry and Photobiology A: Chemistry
AU - Görner, Helmut
AU - Megyesi, Mónika
AU - Miskolczy, Zsombor
AU - Biczók, László
PY - 2010
DA - 2010/08/01
PB - Elsevier
SP - 188-193
IS - 2-3
VL - 214
SN - 1010-6030
SN - 1873-2666
ER -
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BibTex (up to 50 authors)
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@article{2010_Görner,
author = {Helmut Görner and Mónika Megyesi and Zsombor Miskolczy and László Biczók},
title = {Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes},
journal = {Journal of Photochemistry and Photobiology A: Chemistry},
year = {2010},
volume = {214},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016/j.jphotochem.2010.06.025},
number = {2-3},
pages = {188--193},
doi = {10.1016/j.jphotochem.2010.06.025}
}
Cite this
MLA
Copy
Görner, Helmut, et al. “Photoproducts and triplet reactivity of 4′-nitro- and 2′,4′-dinitro-substituted 4-hydroxystilbenes.” Journal of Photochemistry and Photobiology A: Chemistry, vol. 214, no. 2-3, Aug. 2010, pp. 188-193. https://doi.org/10.1016/j.jphotochem.2010.06.025.