Phosphorescence lifctim.?s for the ?I-alkyl benzenes are independent of the alkyl chain length for a gibe-en rigid glass at both liquid nitrogen and argon temperatures. AppxenUy, the lifetimes decrease only if branching occurs nt the alkyt arbor. attached to benzene. Various alkyl substituents seem
Phosphorescence lifetimes of substituted benzenes
β Scribed by J.E. Kent; M.F. O'Dwyer; R.J. Stephens
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 321 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Phosphorescence fifetimes for a variety of polysubstituted benzenes including aIkyl and fluorine substitution. in various solvents at 77Β°K have been measured. A defiite interpretation is not possible, but the results tend to loosen some of the conchsions made in previous simiiar studies
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SJXctrrr zmd triplet lifcrimes of ;mthraquinonc and a-llsio~cnoanthnquinones were studied in EPA at' 77 K. 11 is sup~cstcd that the emitting stms of a-halogcno3nthraquinones arc the lowest triplet statesand that halogen subnhmion ;]I rhc Q position(s) in antimn~uinonc dfects the electronic configura