Acta Chimica Sinica ›› 1987, Vol. 45 ›› Issue (10): 943-948. Previous Articles     Next Articles

Original Articles

聚电解质对离子型染料形成激基缔合物和能量传递的增强作用

刘;叶建平;寿涵森;佟振合   

  1. 中国科学院感光化学研究所
  • 发布日期:1987-10-15

Enhancement of excimer formation and energy transfer efficiency of ionic dyes via interaction with polyelectrolyte

LIU YONGYONG;YE JIANPING;SHOU HANSEN;DONG ZHENHE   

  • Published:1987-10-15

In aqueous solution, Na polystyrenesulfonate (NaPSS) increases the local concentration of ionic dyes Acridine Orange and Pyronine around macroions and enhances excimer formation of Acridine Orange and the efficiency of energy transfer from excited Acridine Orange to Pyronine ground state. In the presence of 10-4 mol dm-3 NaPSS the excimer formation rate constant of Acridine Orange is enhanced by 102 times and the dissociation rate constant of the excimer is decreased 10 times, indicating that excimer, at least in part, is generated from preformed complexes i.e. configurations in which 2 Acridine Orange mols. are in close contact at the instant of absorption. NaCl retards excimer formation of Acridine Orange.

Key words: SODIUM COMPOUNDS, ACRIDINE P, XANTHENE P, REACTIVITY, POLYSTYRENE, SULFONATE, DYES, EXCITED STATE, QUENCHING EFFECTS, REACTION RATE CONSTANT

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