Oxidation potential of intramolecular exciplex on a vinyl copolymer as estimated by electron-transfer quenching reactions.
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概要
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In the electron-transfer reaction from the fluorescent intramolecular exciplexes of a copolymer containing phenanthrene and <I>N</I>,<I>N</I>-dimethylaniline moieties, and of a model compound to electron acceptors, the reactivity of the exciplexes was studied kinetically in polar and nonpolar media. The copolymer was poly(9-vinylphenanthrene-co-<I>p</I>-dimethylaminostyrene) and the model compound was <I>N</I>,<I>N</I>-dimethyl-4-[3-(9-phenanthryl)propyl]aniline. The oxidation potential of the exciplex was evaluated by the relation of the exciplex-quenching rate constants to the reduction potentials of electron-accepting quenchers according to the equations of Rehm and Weller. It was found that the electron-donating ability of these intramolecular exciplexes resembled with each other and was larger than that of excited phenanthrene. In polar media the donating ability was very close to that of the phenanthrene anion radical.
- 公益社団法人 日本化学会の論文
著者
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Iwai Kaoru
Department Of Chemistry Faculty Of Science Nara Women's University
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Nozakura Shun-ichi
Department of Macromolecular Science, Faculty of Science, Osaka University
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Takemura Fukuo
Department of Chemistry, Faculty of Science, Nara Women's University
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Furue Masaoki
Department of Macromolecular Science, Faculty of Science, Osaka University
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