| Title | Surface immobilization of PSI using vitamin K1-like molecular wires for fabrication of a bio-photoelectrode. | | Author(s) | Miyachi M, Yamanoi Y, Yonezawa T, Nishihara H, Iwai M, Konno M, Iwai M, Inoue Y | | Institution | Department of Chemistry School of Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. | | Source | J Nanosci Nanotechnol 2009 Mar; 9(3):1722-6. | | Abstract | We present a bio-photoelectrode made of photosystem I complex (PSI) of cyanobacteria, Thermosynechococcus elongatus, and molecular wires. The newly designed and synthesized molecular wire similar to vitamin K1 (VK1) has a naphthoquinone moiety that can connect to PSI, and a terpyridine moiety for connection to a Co(II) ion. Surface immobilization of PSI and molecular wires was performed by a self-assembled monolayer (SAM) formation process at indium tin oxide (ITO) followed by stepwise coordination reactions. The PSI-immobilized ITO showed a photocurrent action spectrum, whose profile was consistent with that of PSI. We have demonstrated a new method for the immobilization of PSI on the electrode surface, useful in the construction of phovoltaic cells or photon-sensing devices. | | Language | eng | | Pub Type(s) | Journal Article
Research Support, Non-U.S. Gov't
| | PubMed ID | 19435031 |
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