PENZKOFER, A and BEIDOUN, A and DAIBER, M (1992) INTERSYSTEM-CROSSING AND EXCITED-STATE ABSORPTION IN EOSIN-Y SOLUTIONS DETERMINED BY PICOSECOND DOUBLE PULSE TRANSIENT ABSORPTION-MEASUREMENTS. JOURNAL OF LUMINESCENCE, 51 (6). pp. 297-314. ISSN 0022-2313,
Full text not available from this repository.Abstract
The transmission measurement of two intense picosecond pulses (wavelength lambda(L) = 527 nm) separated by 10 ns is applied to extract the quantum yield of triplet formation phi(T), the S(l) singlet excited state absorption cross-section sigma(ex), the T(l) triplet absorption cross-section sigma(T), and the T(n)-T(l) relaxation time tau(T) in the triplet system. Additionally the fluorescence quantum yields phi(F) are measured with a spectrofluorimeter. For eosin Y in water the determined data are phi(T) almost-equal-to 0.8, phi(F) almost-equal-to 0.2, sigma(ex) almost-equal-to 4.5 X 10(-17) cm2, sigma(T) almost-equal-to 5.5 X 10(-17) cm2, and tau(T) almost-equal-to 1 ps. The data for eosin Y in methanol are phi(T) almost-equal-to 0.56, phi(F) almost-equal-to 0.44, sigma(ex) almost-equal-to 3 X 10(-17) cm2, sigma(T) almost-equal-to 4.9 X 10(-17) cm2, and tau(T) almost-equal-to 1 ps.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPTICAL-PHASE CONJUGATION; FLASH-PHOTOLYSIS; XANTHENE DYES; ROSE-BENGAL; LASER; FLUORESCENCE; FILMS; CHROMATOGRAPHY; DERIVATIVES; ABSORBERS; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54556 |
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