We have measured the magnetic field dependence of the prompt fluorescente of anthracene crystals at temperatures down to 10 K. Fklow 50 K the field dependence of prompt and delayed fluorescente ísnot symmetrïc anymore. Thk shows. that the prompt and the delayed fluorescente originate from different
On singlet exciton fission in anthracene and tetracene at 77°K
✍ Scribed by G Klein; R Voltz; M Schott
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 357 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0009-2614
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The spin polarization and emissive character of the magnetic resonance spectrum of mobile triplet excitons in tetracene siqlc crystals observed by Yannus, Roscnthal, and Chopp are interpreted in terms of selective population of the Zeeman subtevels by singlet exciton fission. in addition. the select
Fluorescence lifetimes Tf of anthracene, 9.10-diphenylanthracene and S-methylanthracene have heen measured as a function of pressure to 30 kbar at 77oK. An anomalous Whree-fold increase in rfr OEIserved for anthracene at high pressures. is attributed to prohibition of SI--WT2 intersystem crossing as