物理化学学报 >> 1994, Vol. 10 >> Issue (11): 1020-1025.doi: 10.3866/PKU.WHXB19941111

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交叉共轭型烯酮化合物分子内的电荷转移

汪鹏飞, 岳志军, 吴世康   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1993-06-21 修回日期:1993-11-17 发布日期:1994-11-15
  • 通讯作者: 吴世康

A Study on the Photophysical Behavior of Cross-conjugate Enone Compounds

Wang Peng-Fei, Yue Zhi-Jun, Wu Shi-Kang   

  1. Institute of Photographic Chemistry,Academia Sinica,Beijing 100101
  • Received:1993-06-21 Revised:1993-11-17 Published:1994-11-15
  • Contact: Wu Shi-Kang

关键词: 烯酮化合物, 分子内电荷转移, 扭曲的分子内电荷转移(TICT), 溶致动力学现象

Abstract:

Several cross-conjugate enone compounds with different electron withdrawing substituents have been synthesized. The spectroscopy and photophysical behavior of these compounds in different conditions were studied. Results show that TICT formation which depends strongly on the solvent polarity and electron withdrawing ability of substituents was observed for compounds with different electron withdrawing groups. For compound (Ⅳ) which possesses strong electron withdrawing ability, the TICT formation can be ob served in weak polar solvent, such as in toluene. But, for compounds (Ⅱ) and (Ⅲ), it can be observed in THF and ethyl ether, respectively. It can also be observed that the fluorescence quantum yields of these compounds are varied with the solvent polarity, and a maximum appears in this variation. Results obtained have been discussed preliminary.

Key words: Enone compound, Intramolecular charge transfer(ICT), Twisted intramolecular charge transfer(TICT), Solvatochromism