Photostationary and transient studies of the phosphorescence from the benzil-anisole system. Direct evidence for reversible exciplex formation
✍ Scribed by Ronald E. Brown; Tai-Shan Fang; Chi Lup Kwan; Lawrence A. Singer
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 372 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
received 28 July i977 Photostationary (quantum yields) and transient (emission decays) studies of the benzll phosphorescence in cyclohexane in the Presence of anisole indicate reversible exciplex formation (E) between the benzil triplet (3B*) and anisole with radiative decay occurring from E as well as 3B*. Values of kinetic parameters independently derived from the two experiments agree within < 20%. Both sets of experimental data were computer simulated with a common set of parameters with standard deviations < 10%. While the simulations were insensitive to the absolute values of the rate constants for exciplex formation (kl) and dissociation (kz), the ratio kl/k2 = 0.3 M-l.