影像科学与光化学 ›› 1997, Vol. 15 ›› Issue (2): 120-125.DOI: 10.7517/j.issn.1674-0475.1997.02.120

• 研究论文 • 上一篇    下一篇

苯甲酰基硫代苯甲酸-S-苯酯的双重磷光研究

蒋晓东, 杨国强, 吴世康   

  1. 中国科学院生物物理研究所, 北京100101
  • 收稿日期:1996-09-26 修回日期:1997-01-03 出版日期:1997-05-20 发布日期:1997-05-20
  • 通讯作者: 吴世康
  • 基金资助:
    国家自然科学基金资助项目(批准号:29474175)

DUAL PHOSPHORESCENCE OF BENZOYL S-PHENYL THIOBENZOATES

JIANG Xiaodong, YANG Guoqiang, WU Shikang   

  1. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P.R. China
  • Received:1996-09-26 Revised:1997-01-03 Online:1997-05-20 Published:1997-05-20

摘要: 在对不同取代的苯甲酰基硫代苯甲酸-S-苯酯的光物理性质进行研究时,发现其苯甲酰基在邻位时可观测到双磷光现象,本工作对这种现象的机理进行了研究,确定这种现象是由于溶剂的作用,使溶液中具有多种不同的构象体,不同异构体的磷光发射不同,其激发波长也不同,改变激发波长可观察到双重磷光现象。

关键词: 硫代苯甲酸苯酯, 双重磷光, 构象异构体, 溶剂效应

Abstract: The photophysical behavior of S-phenyl thiobenzoates with different substituents has been studied at 77 K and different results were observed. It was found that the only 2-benzoyl derivative can emit dual phosphorescence. This phenomenon was caused by solvent effect. There are at least two conformational isomers existed in polar solution for 2-benzoyl derivative. The peak wavelength in phosphorescence spectrum depends evidently on the excited wavelength used.

Key words: benzoyl S-phenyl thiobenzoate, dual phosphorescence, conformational isomer, solvent effect