期刊
THIN SOLID FILMS
卷 516, 期 9, 页码 2553-2557出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2007.04.127
关键词
photosystern II; gold nanoparticle; water-splitting reaction; photocurrent
It is well known that photosystem II (PSII) can produce electrons, oxygen, and protons simultaneously via a water-splitting photoreaction. These photochemical properties are expected to exhibit photoconductive function for PSII. In the present study, we have first observed a stable photocurrent due to the photoexcitation of PSII and the subsequent water-splitting reaction, by successfully immobilizing PSII on the selfassembled monolayer (SAM) of a nickel-nitrilotriacetic acid complex (Ni-NTA) prepared on a gold surface via a polyhistidine tag (Histag) as a linker molecule. We have further succeeded in the fabrication of PSII-gold nanoparticle multistructures on the surface of gold electrode, and significant enhancement of photocurrents was achieved due to increased number of immobilized PSII. (c) 2007 Elsevier B.V. All rights reserved.
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