高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (11): 2069.

• 论文 • 上一篇    下一篇

苯环上氯原子的不同取代位置对四苯基锌卟啉-酪氨酸光物理性质的影响

张慧娟1, 冯娟1, 孙照勇1, 艾希成1, 张建平1, 张兴康1, 虞忠衡1, 韩士田2, 刘彦钦2, 吴银素2   

  1. 1. 中国科学院化学研究所, 分子动态与稳态结构国家重点实验室, 北京 100080;
    2. 河北师范大学化学系, 石家庄 050091
  • 收稿日期:2002-07-03 出版日期:2003-11-24 发布日期:2003-11-24
  • 通讯作者: 虞忠衡(1944年出生),男,研究员,博士生导师,主要从事量子化学计算方法及物理有机化学研究.E-mail:yuzh@infoc3.icas.ac.cn E-mail:yuzh@infoc3.icas.ac.cn
  • 基金资助:

    国家自然科学基金(批准号:20072041.20032010.20133020.90101010);国家重点基础研究发展规划项目(批准号:G199810100)资助

Effect of Different Chlorine Substituted Positions on the Photophysical Property of Zinc(Ⅱ) Tetraphenylporphyrin-tyrosine

ZHANG Hui-Juan1, FENG Juan1, SUN Zhao-Yong1, AI Xi-Cheng1, ZHANG Jian-Ping1, ZHANG Xing-Kang1, YU Zhong-Heng1, HAN Shi-Tian2, LIU Yan-Qin2, WU Yin-Su2   

  1. 1. State Key Laboratory for Structural Chemistry of Unstable & Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
    2. Department of Chemistry, Hebei Normal University, Shijiazhuang 050091, China
  • Received:2002-07-03 Online:2003-11-24 Published:2003-11-24

摘要: 稳态紫外光谱、荧光光谱和时间分辨荧光光谱显示,苯环上氯原子的不同位置对氯苯基锌卟啉-酪氨酸的光物理性质有很大影响.紫外吸收光谱中,邻、间和对氯取代的3个化合物都具有典型的Soret带和Q带.其中Soret带位于423nm处,Q(0,0)和Q(0,1)带分别位于549和590nm处.邻位取代化合物的荧光量子产率为0.058,比间位(0.0241)、对位(0.0235)取代化合物的要高得多.邻位取代化合物的荧光寿命(3.11ns)比间位(1.12ns)和对位(1.11ns)取代化合物的长.邻位化合物的这些特性可能归因于取代基之间的空间效应;而在间位和对位化合物中,重原子效应和吸电子的诱导效应可能起主导作用.

关键词: 锌卟啉-酪氨酸, 取代基位置, 光谱性质

Abstract: On the basis of the spectroscopies such as UVabsorption spectroscopy, fluorescence spectroscopy and time-resolved fluorescence spectroscopy, the photophysical properties of o-Cl, m-Cl and p-Cl substituted zinc(Ⅱ) tetraphenylporphyrin-tyrosine have been determined.It was found that the position of the chlorine atom has a great effect on the photophysical behavior of zinc(Ⅱ) tetraphenylporphyrin-tyrosine.Comparing to the m-Cl and p-Cl substituted compounds, abnormally high fluorescence quantum yield and longer fluorescence lifetime were observed in the o-Cl substituted compound and those may be ascribed to the steric effect.

Key words: Zinc(Ⅱ) porphyrin-tyrosine, Position of the substituted group, Spectroscopic properties

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