We believe that the nearly constant ratio of luminescence at 470 versus 495 u seen by Klapffer (1) foi hfK in solid ethanol may be explained by the fact that species III probably abso!bs only ca. 10 + 5% of the hght for h C 385 mu coupled with the fact that species II emits no less than half as stro
Anomalous luminescence behaviour of Michler's ketone in solid solutions
✍ Scribed by W. Klöpffer
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 406 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Michkr's ketone'sliows phosphorescence from two levelswtich are populated by intersystem crossing from two corrected singbt levels. Th% is indicated by the dependence of phosphoresQace spectra, decay time, and fluorescence-to-phosphorescence intensity ratio on the wavelength of the exciting light.
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📜 SIMILAR VOLUMES
In solutions of Michler's kerone in ethanol at 295 K, the fluorescence is almost completely anisotropic. This phenomenon iscaused by the unusually short lifetime of the excited singlet state due to a short intrinsic lifetime and processes leading to a vary low quantum yield. The abso.r$tion, fluores