摘要
利用甲基咔唑为光敏剂，实现了三个降冰片二烯衍生物的光诱导价键异构化反应，荧光猝灭、化学诱导动态核极化（CIDNP）以及热力学讨论都支持电子转移敏化机理，有关量子效率的计算表明单重态电子转移机制对光异构化反应的贡献远大于三重态能量传递机制．此外还探讨了光异物化反应中的溶剂极性效应。
The photoinduced valence isomerizations of three kinds of norbornadiene derivatives were performed under the sensitization of N-methylcarbazole. Fluoresecence quenching, chemically induced dyntalc nuclear polarization (CIDNP) and thermodynandc discussion all support a mechbosm 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.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1996年第5期423-428,共6页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
关键词
降冰片二烯
光异构化反应
太阳能
化学贮存
Norbornadiene derivatives, N-methylcarbazole, Photoinduced valence isomerization, Electron transfer, Enetgy transfer, Effect of solvent polarity
