Effect of aliphatic tails on surface anchoring of amphiphilic rutheniumpolypyridine complexes in water-cast polymer films as studied by photoinduced electron-transfer and optical second harmonic generation

Sunao Yamada, Yasuro Niidome, Takashi Nakano, Yu Ki Tanaka, Yoshihisa Shimada, Sandy I.Yin Lee, Taku Matsuo

    研究成果: Contribution to journalArticle査読

    1 被引用数 (Scopus)

    抄録

    A thin poly(methyl methacrylate) (PMMA) film incorporating an amphiphilic ruthenium (Ru)-polypyridine complex having two (Ru2C16B) or four (Ru4C16B) aliphatic tails, and/or an amphiphilic viologen (LPV), was prepared on a water surface. Both interfacial and in-film photoinduced electron-transfer from the Ru-complex to LPV occurred more effectively in Ru2C16B as compared with Ru4C16B, suggesting more exposure of the hydrophilic head group of Ru2C16B at the film surface. Polarized optical second harmonic generation (SHG) studies on the Ru-complex-impregnated film also verified orientational difference between the two complexes; Ru4C16B tended to take more stand-up orientation as to the film surface. The SHG signal increased quadratically with the number of films in the presence of air gaps among them.

    本文言語英語
    ページ(範囲)1-5
    ページ数5
    ジャーナルThin Solid Films
    352
    1-2
    DOI
    出版ステータス出版済み - 9 8 1999

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • 表面および界面
    • 表面、皮膜および薄膜
    • 金属および合金
    • 材料化学

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