影像科学与光化学 ›› 1994, Vol. 12 ›› Issue (4): 352-357.DOI: 10.7517/j.issn.1674-0475.1994.04.352

• 研究简报 • 上一篇    下一篇

水溶液中芘的荧光被核酸碱基猝灭的研究

张新宇1,2, 金声2, 明阳福1,3, 叶建萍1, 樊美公1   

  1. 1. 中国科学院感光化学研究所, 北京100101;
    2. 北京大学化学系, 北京100871;
    3. 兰州大学, 应用有机化学国家重点实验室, 兰州730000
  • 收稿日期:1993-11-19 修回日期:1994-05-05 出版日期:1994-11-20 发布日期:1994-11-20
  • 通讯作者: 樊美公
  • 基金资助:
    国家自然科学基金

STUDIES ON THE QUENCHING OF PYRENEFLUORESCENCE BY NUCLEIC ACIDBASES IN AQUEOUS SOLUTION

ZHANG XIN-YU1,2, JIN SHENG2, MING1,3, YANG-FU1, YE JIAN-PING1   

  1. Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P. R. China
  • Received:1993-11-19 Revised:1994-05-05 Online:1994-11-20 Published:1994-11-20

摘要: 众所周知,稠环芳烃是一类具有致癌性的物质.虽然对其致癌机理的认识尚未形成一致的看法,但一般都认为同稠环芳烃与DNA,蛋白质等生物活性物质的相互作用有关.因为致癌物后的致癌作用最终都是通过损伤细胞中的DNA而实现的.

关键词: 芘, 荧光猝灭, 核酸碱基

Abstract: The quenching of pyrene fluorescence by nucleic acid bases solution wasstudied.Fluorescence of pyrene is strongly quenched by pyrimidines, but slightly bypurines.The analysis of fluorescence quenching processes shows that quenching by purinesis static mechanism and quenching by pyrimidines is dynamic one.These resalts indicatethat the π-π electron interaction between pyrene and nucleic acid bases exists and thisinteraction may probably lead to the formation of non-emission exciplex between excitedpyrene and pyrimidine and ground state complex between pyrene and purines.

Key words: pyrene, fluorescence, nucleic acid bases, quenching