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.
Intersystem crossing in anthracene
โ Scribed by T.F. Hunter; R.F. Wyatt
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 299 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A temperature dependent intersystem crossing rate is observed below ca. 170ยฐK 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.
๐ SIMILAR VOLUMES
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
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
Singlet-triplet intersystem crossing in methylene is considered as a two step process: (a) reversible intramolecular equilibration of singlet and triplet species. and @) collisional deactivation of the vibrationally excited triplet state. The overall process is predicted to be bimolecular. in ngree