Phosphorimetric Investigation of Triplet-Triplet Energy Transfer in Fluid Solution
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概要
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The mechanism of triplet-triplet (T-T) energy transfer in fluid solution has been studied by means of phosphorimetry in the temperature range 0–60 °C with acetophenone as energy donor, 1,4-dibromonaphthalene as acceptor and isooctane, isopentane or carbon tetrachloride as solvent. From the temperature dependence of the energy transfer, α and <I>k</I><SUB>dif</SUB> could be evaluated separately, <I>k</I><SUB>dif</SUB> denoting the diffusion-controlled rate constant for the encounter of donor and acceptor molecules and α<I>k</I><SUB>dif</SUB> corresponds to the rate constant for the overall energy transfer reaction. The α values are 0.28 at 25 °C in isopentane and 0.43 at 21 °C in isooctane, indicating that the T-T energy transfer process is not strictly diffusion-controlled. The <I>k</I><SUB>dif</SUB> values are nearly equal to those predicted by a modified Debye equation.
- 公益社団法人 日本化学会の論文
著者
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Takemura Takeshi
Division of Chemistry, Research Institute of Applied Electricity, Hokkaido University
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Baba Hiroaki
Division of Chemistry, Research Institute of Applied Electricity, Hokkaido University
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Aikawa Masayuki
Division of Chemistry, Research Institute of Applied Electricity, Hokkaido University
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