✦ LIBER ✦
Photochemical behavior of 2-[2-(2-pyridyl) ethenyl] indole on triplet sensitization. Spin multiplicity dependence of the isomerization modes of an intramolecularly hydrogen-bonded compound
✍ Scribed by Tatsuo Arai; Masaki Obi; Takeshi Iwasaki; Katsumi Tokumaru; Frederick D. Lewis
- Book ID
- 103992795
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 460 KB
- Volume
- 96
- Category
- Article
- ISSN
- 1010-6030
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✦ Synopsis
Although 2-[ 2-(2-pyridyl)ethenyl] indole undergoes one-way E ~ Z isomerization in the excited singlet state, it isomerizes between the E md Z isomers in the excited triplet state. On the basis of the determination of the quantum yields of isomerization and the photostationary ,tate isomer ratios, as well as transient spectroscopic measurements, the potential energy surfaces for E-Z isomerization in the triplet state ~ave been proposed. Specific rotamers of the E and Z isomers are found to be responsible for the triplet state isomerization reactions.