Photoreduction of bisviologen compounds, viologen-(CH2)n-viologen, by 2-propanol.
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概要
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In order to study the polymer effect in the photoreduction of viologen-containing polymers by 2-propanol, bisviologen compounds, V<SUP>2+</SUP>–(CH<SUB>2</SUB>)<I><SUB>n</SUB></I>–V<SUP>2+</SUP>, were subjected to photoreduction. The rates of photoreduction occur in the order <I>n</I>=2>3>4>5>MV<SUP>2+</SUP>. The structure of the photoreduced species was found to be predominantly the doubly reduced species, V<SUP>+</SUP>–(CH<SUB>2</SUB>)<I><SUB>n</SUB></I>–V<SUP>+</SUP>, in the cases of <I>n</I>=2 and 3, and mixtures of the doubly reduced and singly reduced species, V<SUP>+</SUP>–(CH<SUB>2</SUB>)<I><SUB>n</SUB></I>–V<SUP>2+</SUP>, in the cases of <I>n</I>=4 and 5. Intramolecular dimeric association of V<SUP>+</SUP> units was observed for all the compounds except for <I>n</I>=2, where the intramolecular association was structurally inhibited. The variation of rate and structure distribution of reduced species was interpreted in terms of the local concentration effect in the photoreduction step.
- 公益社団法人 日本化学会の論文
著者
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Nozakura Shun-ichi
Department of Macromolecular Science, Faculty of Science, Osaka University
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Furue Masaoki
Department of Macromolecular Science, Faculty of Science, Osaka University
関連論文
- Oxidation potential of intramolecular exciplex on a vinyl copolymer as estimated by electron-transfer quenching reactions.
- Photoreduction of bisviologen compounds, viologen-(CH2)n-viologen, by 2-propanol.
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