Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (03): 326-329.doi: 10.1016/S1872-1508(06)60008-9

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Dendritic Bis-(8-hydroxyquinoline) Derivatives: Studies on the Fluorescence Quenching and Decay

ZHANG Lu; YOU Chang-Jiang; CHEN Jin-Ping; YANG Guo-Qiang; LI Yi   

  1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China; Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2005-09-27 Revised:2005-11-02 Published:2006-03-10
  • Contact: LI Yi E-mail:yili@mail.ipc.ac.cn

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Abstract: The fluorescence quenching and the fluorescence decay of a series of dendritic bis-(8-hydroxyquinoline) derivatives (Gn-QMQ, n=1~3) were studied. The quenching rate constant decreased and fluorescence lifetime increased with the generation n increase, which resulted from an increased site-isolating effect of the dendritic structure on the core. Photophysical studies in different solvents indicated that there was an enhanced site-isolating effect in CH3CN.

Key words: Poly(aryl ether) dendrimer, 8-hydroxyquinoline, Fluorescence quenching, Fluorescence decay