物理化学学报 >> 1996, Vol. 12 >> Issue (05): 456-459.doi: 10.3866/PKU.WHXB19960514

研究简报 上一篇    下一篇

室温下非极性溶剂中氧鎓盐的定域激发

陈懿,吴世康   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1995-08-31 修回日期:1995-10-31 发布日期:1996-05-15
  • 通讯作者: 吴世康

The Local Excitation of Pyrylium Salt in Non-polar Solvent at Room Temperature

Chen Yi,Wu Shi-Kang   

  1. Institute of Photographic Chemistry,Academia Sinica,Beijing 100101
  • Received:1995-08-31 Revised:1995-10-31 Published:1996-05-15
  • Contact: Wu Shi-Kang

关键词: 氧鎓盐, 分子内电荷转移, 定域激发

Abstract:

The spectral properties of 8-(4-methoxyphenyl)methylene-2-phenyl-4-(4-methoxy) phenyl-5,6,7,8-tetrahydrobenzo[b]pyrylium salt in polar solvents (acetonitrile or 1,2-dichloroethane) and in non-polar solvents (toluene or benzene) have been compared. It has been shown that there are dual fluorescence emissions in non-polar solvent at room temperature, one of which corresponds to CT (charge transfer) emission, the other to LE (local excitation) emission, whereas there is only CT fluorescence emission in polar solvent at room temperature.

Key words: Pyrylium salt, Intramolecular charge transfer, Locally excited state