Fabrication and photoelectrochemical properties of electron donor-acceptor assemblies via titanium oxide interlayers

Satoshi Nitahara, Nao Terasaki, Tsuyoshi Akiyama, Sunao Yamada

    Research output: Contribution to journalConference articlepeer-review

    10 Citations (Scopus)

    Abstract

    Ultrathin molecular films consisting of electron donor (D)-acceptor (A) pairs via titanium oxide coordinative bonding have been fabricated on an indium-tinoxide electrode, by using the techniques of self-assembly and surface sol-gel process. Porphyrin and tris (2,2′-bipyridine) ruthenium (II) were used as D, while viologen as A, respectively. The degree of assembling of D and A were characterized by electrochemical and absorption measurements. In the case of the porphyrin-viologen pair, photocurrent generation based on photoinduced electron-transfer was realized, and multilayer formation of porphyrin increased the photocurrents. On the other hand, the ruthenium (II) complex-viologen pair showed very poor photocurrent responses, probably due to much poorer light absorptivity as compared with porphyrin.

    Original languageEnglish
    Pages (from-to)230-234
    Number of pages5
    JournalThin Solid Films
    Volume438-439
    DOIs
    Publication statusPublished - Aug 22 2003
    EventThe 5th International Conference on Nano-Molecular Electronics - Kobe, Japan
    Duration: Dec 10 2002Dec 12 2002

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films
    • Metals and Alloys
    • Materials Chemistry

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