化学学报 ›› 1987, Vol. 45 ›› Issue (6): 530-534. 上一篇    下一篇

研究论文

TBP"探针"法与荧光光谱法测定环己烷最低激发单态G值的比较

袁荣尧;吴季兰   

  1. 北京大学技术物理学系
  • 发布日期:1987-06-15

A comparison between the G values of the lowest excited singlet state of cyclohexane measured by using TBP as scavenger and by the fluorescence method

YUAN RONGYAO;WU JILAN   

  • Published:1987-06-15

关键词: 荧光分析, 氧化铝, 气相色谱, 氧化硅, 激发态, 环己烷, 探针, 扩散, 能量传递, 荧光分光光度法

By using tri-Bu Phosphate (TBP) as an energy acceptor, G value of lowest excited singlet state of cyclohexane has been determine under g irradiation It was found that in N2 atmosphere when the dose approaches zero G(S1) equals 1.3 ?0.2. Which is in harmony with the G value determine by fluorescence method. Rate constant of energy transfer from lowest excited singlet state of cyclohexane to TBP was found to be 0.6 ?1010 mol-1譻-1, which is in harmony with kses. The influence factor on the determination of yields of excited states and rate constant of energy transfer was discussed. The excited triplet state of cyclohexane has been studied, G value of excited triplet state of cyclohexane is 0.26 ?0.04 and t x 6 ns.

Key words: FLUORIMETRIC ANALYSIS, ALUMINIUM OXIDE, GAS CHROMATOGRAPHY, SILICON OXIDE, EXCITED STATE, CYCLOHEXANE, PROBES, DIFFUSION, ENERGY TRANSFER, FLUOROSPECTROPHOTOMETRY

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