Zobrazeno 1 - 10 of 111 pro vyhledávání: '"Klaus Gollnick"'
2
Metallkomplexe mit funktionalisierten Schwefelliganden, VIII [1]. 4-Phenyl-1,2-dithiolan-1-oxid, ein stabiles, fünfgliedriges cyclisches Thiosulfinat / Metal Complexes of Funetionalized Sulfur Containing Ligands, VIII [1]. 4-Phenyl-1,2-dithiolane-1-oxide, a Stable, Five-Membered Cyclic Thiosulfinate
Autor: Klaus Gollnick, Gabriele Bosl, Wolfgang Weigand, Bernd von Dielingen
Publikováno v: Zeitschrift für Naturforschung B. 49:513-518
Sensitized photooxidation of 4-phenyl-1,2-dithiolane 1 has been studied. Reacting it with 0.5 mole equivalents o f singlet oxygen, a mixture of 1, 4-phenyl-1,2-dithiolane-1-oxide 2, and 4-phenyl-1,2-dithiolane-2-dioxide 3 is produced. Using one mole
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::242e76b135ed48872dd4c54edbe155a4
https://doi.org/10.1515/znb-1994-0414
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3
Substituent-dependent electron-transfer-induced photooxygenation of 1,1-diarylethylenes
Autor: Klaus Gollnick, Albert Schnatterer, Gerald Utschick
Publikováno v: The Journal of Organic Chemistry. 58:6049-6056
Rates and products of 9,10-dicyanoanthracene-sensitized photooxygenations of 1,1-diarylethylenes (1a-r) in acetonitrile were studied. If at least one of the aryl groups carries an electron-donating substituent at the para (or ortho) position (1a-1),
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f55dfe9093fc9a6ef2d7275f006731cf
https://doi.org/10.1021/jo00074a035
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4
Electron-transfer-induced photo-oxygenation reactions and the special salt effect: determination of efficiencies of free radical ion formation from solvent-separated radical ion pairs in oxygen-saturated acetonitrile solutions
Autor: Günter Wellnhofer, Klaus Gollnick
Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 74:137-145
The special salt effect exerted by LiClO4 (LP) on the rate of dicyanoanthracene (DCA)-photo-induced electron transfer oxygenation of tetraarylcyclopropane (1) and 1,1-diarylethylenes (3a–d) in acetonitrile, was used to determine several important p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ccedeaed042e0f6fcc358e98c7dc06f
https://doi.org/10.1016/1010-6030(93)80109-m
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5
Hydroxyanthraquinones as sensitizers of electron-transfer-induced photo-oxygenation reactions
Autor: Stephan Held, Klaus Gollnick
Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 70:135-145
Hydroxy-substituted 9,10-anthraquinones (1-AQ, 2-AQ, 1,2-AQ, 1,4-AQ, 1,8-AQ, 2,6-AQ, 3-Me-1,6,8-AQ and 1,2,5,8-AQ) may serve as photosensitizers of electron-transfer-induced reactions with suitable electron-donor substrates. In oxygen-saturated aceto
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5068a7eca9e10f3fb40f91e2e9a964fd
https://doi.org/10.1016/1010-6030(93)85033-5
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6
ChemInform Abstract: Dye-Sensitized Photooxygenation of 2,3-Dihydrofurans: Competing (2 + 2) Cycloadditions and Ene Reactions of Singlet Oxygen with a Rigid Cyclic Enol Ether System
Autor: Karen Knutzen-Mies, Klaus Gollnick
Publikováno v: ChemInform. 22
Singlet oxygen reacts with 2,3-dihydrofuran, 5-methyl-, 4,5-dimethyl-, and 4-carbomethoxy-5-methyl-2,3-dihydrofuran, 5,6-dimethyl-3,4-dihydro-2H-pyran, and 3-methoxy-2-methyl-2-butene (32) in nonpolar and polar aprotic solvents to yield dioxetanes an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32d8b06285a9819fe4a7a82e0fd1f709
https://doi.org/10.1002/chin.199143123
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9
Hydroxyanthraquinones as sensitizers of singlet oxygen reactions: quantum yields of triplet formation and singlet oxygen generation in acetonitrile
Autor: Klaus Gollnick, Daniel O. Mártire, Silvia E. Braslavsky, Stephan Held
Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 69:155-165
The photophysical properties, in particular those of the triplet states, of α- and β-hydroxy-substituted 9,10-anthraquinones (1-AQ, 2-AQ, 1,2-AQ, 1,4-AQ, 1,8-AQ, 2,6-AQ, 3-Me-1,6,8-AQ and 1,2,5,8-AQ) were studied. In acetonitrile at room temperatur
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab175ae4f10fd505fa1cb921875fedc6
https://doi.org/10.1016/1010-6030(92)85273-w
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10
Merbromin (mercurochrome) and other xanthene dyes: Quantum yields of triplet sensitizer generation and singlet oxygen formation in alcoholic solutions
Autor: Stephan Held, Klaus Gollnick, Theodor Franken, Hanns R. Paur, Mohamed F.R. Fouda
Publikováno v: Journal of Photochemistry and Photobiology B: Biology. 12:57-81
Absorption, fluorescence and phosphorescence maxima, singlet and triplet energies, and quantum yields of fluorescence φ F and intersystem crossing φ T of highly purified disodium salts of fluorescein dyes in alcoholic solutions are reported. The me
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a9a6073e16e19eeafc8768f72840e79
https://doi.org/10.1016/1011-1344(92)85018-p
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