Hydrogen Abstraction Reaction of Hydrogenated Diamond Surface in Liquid Phase by Radical Initiators Used in Polymer Synthesis

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  • TSUBOTA Toshiki
    Material Development Department, Kumamoto Industrial Research Institute
  • HIRABAYASHI Osamu
    Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
  • IDA Shintaro
    Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
  • NAGAOKA Shoji
    Material Development Department, Kumamoto Industrial Research Institute
  • NAGATA Masanori
    Material Development Department, Kumamoto Industrial Research Institute
  • MATSUMOTO Yasumichi
    Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
  • KUSAKABE Katsuki
    Department of Applied Chemistry, Kyushu University
  • MOROOKA Shigeharu
    Department of Applied Chemistry, Kyushu University

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Other Title
  • 高分子合成用ラジカル発生試薬による水素化ダイヤモンド表面の液相中での水素引き抜き反応
  • コウブンシ ゴウセイヨウ ラジカル ハッセイ シヤク ニ ヨル スイソカ ダイヤモンド ヒョウメン ノ エキソウ チュウ デ ノ スイソ ヒキヌキ ハンノウ

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Abstract

Various radical initiators were used for investigating the hydrogen abstraction reaction on hydrogenated diamond surface. Benzophenone excited by UV light, which is one of the most popular photosensitizers, could not abstract the hydrogen atoms. Thermally excited α,α′-azobisisobutyronitrile (AIBN), which is one of the most popular radical initiators of azo compounds, could also not abstract the hydrogen atoms. On the other hand, benzoyl peroxide, which is one of the most popular radical initiators of peroxide compounds, could abstract the hydrogen atoms. The reaction rate of the hydrogen abstraction reaction by benzoyl peroxide depended on the species of solvent. The hydrogen atoms in CH2 group on (100) face are more reactive than that in CH3group on (111) face.

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