Translational diffusion of a transient radical studied by the transient grating method, pyrazinyl radical in 2-propanol

DOI PDF 被引用文献16件
  • Masahide Terazima
    Department of Chemistry, Faculty of Science, Kyoto University, Kyoto, 606, Japan
  • Noboru Hirota
    Department of Chemistry, Faculty of Science, Kyoto University, Kyoto, 606, Japan

書誌事項

公開日
1993-04-15
DOI
  • 10.1063/1.464819
公開者
AIP Publishing

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説明

<jats:p>A translational diffusion coefficient (Ddiff) of a transient radical created by a photochemical reaction of pyrazine in 2-propanol is measured by the transient grating technique. The rise and decay curves of the transient grating signal on the millisecond time scale are attributed to the diffusion of the pyrazinyl radical and the parent molecule (pyrazine). Ddiff of both species are determined. The measured Ddiff of the radical is four times smaller than that of pyrazine even though the molecular size is similar to each other. The small Ddiff suggests that the radical–solvent interaction is stronger than the parent molecule–solvent interaction.</jats:p>

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