Shirdel, J. and Penzkofer, Alfons and Prochdzka, R. and Daub, Joerg and Hochmuth, E. and Deutzmann, Rainer (2006) Absorption and emission spectroscopic characterization of 10-phenyl-isoalloxazine derivatives. CHEMICAL PHYSICS, 326 (2-3). pp. 489-499. ISSN 0301-0104,
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The flavoquinone dyes 10-phenyl-isoalloxazine-3-acetic acid ethyl ester (1) and 10-(4-bromo-phenyl)-3-methyl-isoalloxazine (2) in dichloromethane, acetonitrile, and methanol are characterized by absorption and emission spectroscopy. Absorption cross-section spectra, stimulated emission cross-section spectra, fluorescence quantum distributions, quantum yields, lifetimes, and degrees of fluorescence polarization are determined. The blue-light photo-degradation of the dyes is studied. Mass spectroscopic measurements reveal the formation of phenyl-benzo-pteridine (isoalloxazine) derivatives, tetraaza-benzo-aceanthrylene derivatives, dihydro-quinooxaline derivatives, and pyrazino-carbazole derivatives. An enhancement of photo-degradation is observed by the formed photo-fragments. (c) 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BLUE-LIGHT PHOTORECEPTORS; RHODAMINE 6G SOLUTIONS; QUANTUM YIELD; FLUORESCENCE; FLAVIN; BEHAVIOR; SINGLET; SYSTEM; LASER; MOLECULES; isoalloxazine dyes; flavoquinone dyes; absorption spectroscopy; fluorescence spectroscopy; photo-degradation; mass-spectroscopic analysis |
| Subjects: | 500 Science > 530 Physics 500 Science > 540 Chemistry & allied sciences 500 Science > 570 Life sciences |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Biochemie I > Prof. Dr. Rainer Deutzmann Chemistry and Pharmacy > Institut für Organische Chemie > Alumni or Retired Professors > Prof. Dr. Jörg Daub |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Feb 2021 09:33 |
| Last Modified: | 08 Feb 2021 09:33 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34194 |
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