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Acta Physico-Chimica Sinica  1996, Vol. 12 Issue (05): 423-428    DOI: 10.3866/PKU.WHXB19960508
A Mechanism Study of Sensitized Photoisomerization of Norbornadiene Derivatives
Wang Xue-Song,Zhang Bao-Wen,Cao Yi
Laboratory of Photochemistry,Institute of Photographic Chemistry,The Chinese Academy of Sciences,Beijing 100101
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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.

Key wordsNorbornadiene derivatives      N-methylcarbazole      Photoinduced valence isomerization      Electron transfer      Energy transfer      Effect of solvent polarity     
Received: 09 October 1995      Published: 15 May 1996
Corresponding Authors: Cao Yi   
Cite this article:

Wang Xue-Song,Zhang Bao-Wen,Cao Yi. A Mechanism Study of Sensitized Photoisomerization of Norbornadiene Derivatives. Acta Physico-Chimica Sinica, 1996, 12(05): 423-428.

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