Fabrication of novel photosystem I-gold nanoparticle hybrids and their photocurrent enhancement

Nao Terasaki, Noritaka Yamamoto, Takashi Hiraga, Ikutaro Sato, Yasunori Inoue, Sunao Yamada

    Research output: Contribution to journalConference articlepeer-review

    72 Citations (Scopus)


    We have first prepared a novel bio-nanohybrid electrode consisting of a photosynthetic protein complex, photosystem I (PSI), and gold nanoparticles, and have measured their photocurrent generation properties. The hybrid electrode was fabricated by three steps: sedimentation of gold nanoparticles on a planar gold substrate, followed by modification with 3-mercapto-1-propanesulfonic acid by gold-sulfur self-assembling, and finally modification with PSI by electrostatic adsorption. Even though PSI is one of the proteins and is much larger than usual organic dyes for photocurrent generation, we have. succeeded in constructing PSI-gold nanoparticle hybrid electrodes, and in obtaining substantially greater photocurrent responses from PSI as compared with the corresponding planar electrode system.

    Original languageEnglish
    Pages (from-to)153-156
    Number of pages4
    JournalThin Solid Films
    Issue number1-2
    Publication statusPublished - Mar 21 2006
    EventProceedings of the Sixth International Conference on Nano-Molecular Electronics (ICNME 2004) -
    Duration: Dec 15 2004Dec 17 2004

    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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