期刊
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
卷 1767, 期 6, 页码 653-659出版社
ELSEVIER
DOI: 10.1016/j.bbabio.2006.11.008
关键词
cyanobacterial photosystem 1; gold nanoparticle; molecular wire; field-effect transistor; bio-photosensor
We report on the first successful output of electrons directly from photosystem I (PSI) of thermophilic cyanobacteria to the gate of a field-effect transistor (FET) by bypassing electron flow via a newly designed molecular wire, i.e., artificial vitamin K-1, and a gold nanoparticle; in short, this newly manufactured photosensor employs a bio-functional unit as the core of the device. Photo-electrons generated by the irradiation of molecular complexes composed of reconstituted PSI on the gate were found to control the FET. This PSI-bio-photosensor can be used to interpret gradation in images. This PSI-FET system is moreover sufficiently stable for use exceeding a period of I year. (c) 2006 Elsevier B.V. All rights reserved.
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