title: Bio-photosensor: Cyanobacterial photosystem I coupled with transistor via molecular wire.
abstract: 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 1 year.
authors.affiliation: Photonics Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8857, Japan.
authors.forename: Nao
authors.initials: N
authors.lastname: Terasaki
authors.forename: Noritaka
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Kaoru
authors.initials: K
authors.lastname: Tamada
authors.forename: Mineyuki
authors.initials: M
authors.lastname: Hattori
authors.forename: Takashi
authors.initials: T
authors.lastname: Hiraga
authors.forename: Akihiko
authors.initials: A
authors.lastname: Tohri
authors.forename: Ikutaro
authors.initials: I
authors.lastname: Sato
authors.forename: Masako
authors.initials: M
authors.lastname: Iwai
authors.forename: Michinao
authors.initials: M
authors.lastname: Iwai
authors.forename: Shunpei
authors.initials: S
authors.lastname: Taguchi
authors.forename: Isao
authors.initials: I
authors.lastname: Enami
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Inoue
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Yamanoi
authors.forename: Tetsu
authors.initials: T
authors.lastname: Yonezawa
authors.forename: Katsuya
authors.initials: K
authors.lastname: Mizuno
authors.forename: Masaki
authors.initials: M
authors.lastname: Murata
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nishihara
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yoneyama
authors.forename: Makoto
authors.initials: M
authors.lastname: Minakata
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Ohmori
authors.forename: Makoto
authors.initials: M
authors.lastname: Sakai
authors.forename: Masaaki
authors.initials: M
authors.lastname: Fujii
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods*; D000458:Cyanobacteria / Q000737:chemistry*; D004563:Electrochemistry; D006046:Gold / Q000737:chemistry; D008956:Models, Chemical; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry; D045331:Photosystem I Protein Complex / Q000737:chemistry* / Q000378:metabolism* / Q000648:ultrastructure; D013501:Surface-Active Agents / Q000737:chemistry; D013890:Thiourea / Q000737:chemistry; D014173:Transistors, Electronic; D010837:Vitamin K 1 / Q000737:chemistry
chemical_list: D045331:Photosystem I Protein Complex; D013501:Surface-Active Agents; D006046:Gold; D010837:Vitamin K 1; D013890:Thiourea