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Citation: Wang Xue-Song, Zhang Bao-Wen, Cao Yi. A Mechanism Study of Sensitized Photoisomerization of Norbornadiene Derivatives[J]. Acta Physico-Chimica Sinica, ;1996, 12(05): 423-428. doi: 10.3866/PKU.WHXB19960508 shu

A Mechanism Study of Sensitized Photoisomerization of Norbornadiene Derivatives

1.
Laboratory of Photochemistry,Institute of Photographic Chemistry,The Chinese Academy of Sciences,Beijing 100101

Received Date: 9 October 1995
Available Online: 15 May 1996

The photoinduced valence isomerizations of three kinds of norbornadiene derivatives were performed under the sensitization of N-methylcarbazole. Fluoresecence quenching, chemically induced dynamic nuclear polarization (CIDNP) and thermodynamic discussion all support a mechanism involving electron transfer. The calculation of quantum yields indicates that the singlet electron transfer makes far more contributions to the photoisomerization than the triplet energy transfer. Additionally, the influence of solvent polarity on the photoisomerizations was also discussed.
- Norbornadiene derivatives,
- N-methylcarbazole,
- Photoinduced valence isomerization,
- Electron transfer,
- Energy transfer,
- Effect of solvent polarity
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