The photoionization mechanism of N,N,N',N'-tetramethyl-p-phenylenediamine in acetonitrile.

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概要

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• The photoionization mechanism of <I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tetramethyl-<I>p</I>-phenylenediamine (TMPD) in an acetonitrile solution was investigated by means of the fluorescence lifetime measurement, picosecond and nanosecond laser photolyses, and photocurrent measurement. The temperature dependence of the fluorescence lifetime was interpreted in terms of the thermally activated monophotonic ionization or the ion-pair-formation mechanism from the S<SUB>1</SUB> excited level. Picosecond laser photolysis clearly showed that a direct ionization from higher S<SUB>1,0</SUB> levels took place before relaxation into the S<SUB>1.0</SUB> level. The relative yields of triplet, ion-pair, and cation formation were estimated from analyses of the transient spectra and the photocurrent.

• 公益社団法人 日本化学会の論文

著者

• NAKASHIMA Nobuaki

  Institute of Environmental Toxicology

• Tanaka Jiro

  Department Of Biomaterials Okayama University Graduate School Of Medicine Dentistry And Pharmaceutic

• YOSHIHARA Keitaro

  Institute for Molecular Science

• Nakamura Hiroki

  Department Of Applied Physics And Chemistry The University Of Electro-communications:(present Addres

• Kanamaru Nobuaki

  Department Of Chemistry Faculty Of Science Nagoya University

• Sumitani Minoru

  Institute for Molecular Science

• Nakamura Shigemasa

  Department of Chemistry, Faculty of Science, Nagoya University

• Nohara Sawako

  Department of Chemistry, Faculty of Science, Nagoya University

• Saito Yasuyoshi

  Department of Chemistry, Faculty of Science, Nagoya University

• Nakashima Nobuaki

  Institute for Molecular Science

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