Many but not al! bands of the 2600 A absorption system of benzene involving vibrational levels m&e than 3000 cm-l above the zerepoint level of the ,excited state are seen to be more or less diffuse when photographed under very high resolution This threshold lies almost exactly at the hkhest level ab
Solvent effects on relaxation of the 1B2u state of benzene
โ Scribed by Simons S. Cohen
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 344 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Values of triplet yields for dilute solutions of benzene in methylcyclohesnne, cyciohesane, methanol, ethanol, acetonitrile, perfluoro-n-hexane, and water, and also fluoreaccnce yields and lifetimes in perfluoro-n-hesane arc reported. The calculated rate constants for fluorescence and intersystem crossing are only slightly affected by wlvent. except for water. The enhancement of "internal conversion" by increasing solvent polarity is interpreted zs a result of an increase in the pre-esponential factor for a possible *(rr, n*) + '(a, 3%) transition. '. '._ 371 .', VoluAe 18, numbcr 3 CHEMICAL PHYSICS LETTERS 1 Febrxlry 197.1 . .
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