A temperature dependent intersystem crossing rate is observed below ca. 170Β°K for anthracene in methyl tetrahydrofuran. From the temperature dependence of the 0.0 bands in absorption and emission, this is interpreted as being due to slow lattice relaxation in the excited singlet state.
Intersystem crossing in anthracene-N,N-diethylaniline exciplex
β Scribed by Takashi Nishimura; Nobuaki Nakashima; Noboru Mataga
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 400 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
T&c growing-in of the anthraccnc triplet state has been mcasurcd in the cast of the anthracenc-NJUN-dicthylanthnc cxciplex system in hcxane. The anthracenc triplet state IS formed from the relaxed cxciplcv fluorescent state.
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An unusual temperature ,effect on ihe intensity of fluorescence of 9-carbonyl derivhtives of anthracene is observed: ihis is interpreted in terms of an intersystem crossing process from the lowest excited singlet state, !+r to the higher excited triplet state T,&\_ ,. Investigations of temperature
## Abstract Photoinduced electronβtransfer system of anthraceneβ__N, N__βdiethylaniline (MA) was studied in the oil in water (O/W) microemulsions formed by SDS (sodium dodecyl sulfate), BA (benzyl alcohol) and H~2~O. The timeβresolved fluorescence study showed mat the fluorescence quenching of the
The major jR#g~a~ eIemnic ~l~a~~~ mrxkaaism from the first el~t~Rj~ly excited St singleE manifold of anthracene and its isotopic and chemical derivatives involves intersystem crossing (ISC) [ 1-15 1, which proceeds via two parallel mechanisms: (1) DirectSi-+ ISC [Sj to thestatistical first triplet
A trnnsicnt absorption is observed in nnthraccne (A/-N, N-diethyianiline (D) sofutions in toiuene excited by the 3371k line of n nitrogen laser. The lifetime of the transient matches that of the fluorescence of the excited (DA) charge transfer complex. The absorption is assigned to a transition from