Enhanced photocurrent in anthracene crystals at 77°K
✍ Scribed by A. Coret; A. Fort
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 237 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0038-1098
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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
The phosphorescence yreld of diphenyl ether increases markedly relative to phenO1 in ethanol glass at 77 I;. AnaJ:~sis of the results reveals that the phosphorescence enhancement is attributable to increased spin-orbit coupling arismg from the non-planarity of the loneparr orbital of the oxygen atom
A species which has the characteristics of shallowly trapped electrons, has been observed in an X-irradiated annezded methanol/water matrix. ?Ze species has a narrow slinglet ESR line iaH = 3.2 G) and is easily bleachable with Light OF wave- length 1000 nm. Furthermore, only 4 x lo3 h1 of the electr