物理化学学报 >> 1996, Vol. 12 >> Issue (05): 418-422.doi: 10.3866/PKU.WHXB19960507

研究论文 上一篇    下一篇

取代苯乙烯基吡嗪光物理行为的研究

李泽敏,吴世康   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1995-09-04 修回日期:1995-11-20 发布日期:1996-05-15
  • 通讯作者: 吴世康

Study on Photophysical Behaviors of Styryl Pyrazine Derivatives

Li Ze-Min,Wu Shi-Kang   

  1. Institute of Photographic Chemistry,Academia Sinica,Beijing 100101
  • Received:1995-09-04 Revised:1995-11-20 Published:1996-05-15
  • Contact: Wu Shi-Kang

摘要:

合成了一系列带有不同推、拉电子能力的取代苯乙烯基吡嗪化合物,测定了它们在不同极性、不同粘度介质条件下的吸收光谱和发射光谱.结果表明,异构化和邻近效应是导致该类化合物荧光量子产率较低的主要原因,而取代基的性质对它们的发光行为以及光异构化行为均有很大影响

关键词: 吡嗪;光物理, 邻近效应, 异构化

Abstract:

A series of styryl pyrazine derivatives with different electron donating or withdrawing substituents were synthesized. The absorption and emission spectra of these compounds in different polar or viscous medium were obtained. Results indicate that cooperation of photo-isomerization and 'negative solvatokinetic' effect leads to lower fluorescence quantum yields of these compounds. Properties of substituents have great influence on the photophysical and photochendcal behavior of the synthesized pyrazine derivatives.

Key words: Pyrazine, Photophysics, Proximity effect, Isomerization