Studies of the Photoreduction of Thiazine Dyes in Aqueous Solutions

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概要

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• Judging from the experiments performed in our laboratory, the photoreduction of dye without the addition of any reducing agent takes place only in thiazine dyes, and the reaction is particularly prominent when demethylation occurs simultaneously.<BR>The reaction proceeds in the following way:<BR>D+<I>h</I>ν→D<SUP>*</SUP><BR>D<SUP>*</SUP>D<SUP>t</SUP><BR>D<SUP>t</SUP>+D→X (X=D<SUP>－</SUP>……D<SUP>+</SUP>)<BR>(<U>Remark: Graphics omitted.</U>)<BR>The part in parentheses is still doubtful. The above conclusion is consistent with the results of the flash experiment which will be described in a following paper. It has been proposed that some reducing agents attack D<SUP>t</SUP> directly, while others attack the half-oxidized state.

• 社団法人 日本化学会の論文

著者

• Obata Hiroshi

  Department Of Food Science And Technology Faculty Of Agriculture Kyoto University

• Hayashi Shigenari

  Department of Chemistry Faculty of Science Tohoku University

• Koizumi M.

  Department of Chemistry Faculty of Science Tohoku University

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• Studies of the Photoreduction of Thiazine Dyes in Aqueous Solutions
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