Picosecond time-resolved spectroscopy and the intersystem crossing rates of anthrone and fluorenone
โ Scribed by T. Kobayashi; S. Nagakura
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 444 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0009-2614
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A large solvent polarity effect on the rate of singlet to triplet intersystem crossing (ksT) has been observed in the carbenes, diphenylcarbene (DPC) and dicycloheptadienylidene (DCHD)-it is found that both ksT and the energy splitting (A&T) separtaing the singlet and triplet states decrease as the
The average rate of mtersystem crossmg from the lowest tnplet state to the ground state increases by a factor of approxunately 2.5 between 2 K and 77 K for tetraphenylchlorin and tetraphenyIchlonn-dr. This observation is discussed interms of radiatronless-transttlon theory. It is also found that, co