title: Bio-inspired photoresponse of porphyrin-attached gold nanoparticles on a field-effect transistor.
abstract: A bio-inspired photoresponse was engineered in porphyrin-attached Au nanoparticles (AuNPs) on a field-effect transistor (FET). The system mimics photosynthetic electron transfer, using porphyrin derivatives as photosensitizers and AuNPs as photoelectron counting devices. Porphyrin-protected AuNPs were immobilized onto the gate of an FET via the formation of self-assembled monolayers. Photoinduced electron transfer from the porphyrin led to single electron transfer at the Au nanoparticles, which was monitored via a changing gate voltage on the FET in the presence of organic electrolyte. The further attachment of other functional molecules to this system should enable various other potential functionalities. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Mariko
authors.initials: M
authors.lastname: Miyachi
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. Electronic address: yamanoi@chem.s.u-tokyo.ac.jp.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Yamanoi
authors.affiliation: Department of Electrical Engineering and Computer Science, School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Nakazato
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. Electronic address: nisihara@chem.s.u-tokyo.ac.jp.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nishihara
mesh_terms: D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*; D014173:Transistors, Electronic
chemical_list: D011166:Porphyrins; D006046:Gold
keywords: Au nanoparticles; Bio-inspired photosensor; Field-effect transistor; Porphyrin; Quantum size effect