title: Plasmon-assisted photocurrent generation from silver nanoparticle monolayers combined with porphyrins via their different chain-length alkylcarboxylates.
abstract: Three-typed porphyrin derivatives with a different chain-length alkylcarboxylic acid as their peripheral anchor group have been prepared. Anodic photocurrents were observed in a simple system where the porphyrin derivatives were directly anchored on an indium tin oxide (ITO) electrode. Cathodic photocurrents and their plasmon-assisted enhancement appeared from an Ag nanoparticle (Ag NP) composite monolayer combined with the porphyrin derivatives on the ITO electrode. In the photocurrent generation mechanism, Ag NPs played both the roles as photon- and energy-transfer to the porphyrin derivatives. The plasmon-assisted enhancement was affected by the chain-lengths of the peripheral anchor groups.
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Kakuta
authors.forename: Hiroki
authors.initials: H
authors.lastname: Kon
authors.forename: Azusa
authors.initials: A
authors.lastname: Kajikawa
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Kanaizuka
authors.forename: Shigeta
authors.initials: S
authors.lastname: Yagyu
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Miyake
authors.forename: Manabu
authors.initials: M
authors.lastname: Ishizakil
authors.forename: Keirei
authors.initials: K
authors.lastname: Uruma
authors.forename: Takanari
authors.initials: T
authors.lastname: Togashi
authors.forename: Masatomi
authors.initials: M
authors.lastname: Sakamoto
authors.forename: Masato
authors.initials: M
authors.lastname: Kurihara
mesh_terms: D043182:Carboxylesterase / Q000737:chemistry* / Q000528:radiation effects; D004574:Electromagnetic Fields; D004579:Electron Transport / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D008970:Molecular Weight; D010316:Particle Size; D010777:Photochemistry / Q000379:methods*; D011166:Porphyrins / Q000737:chemistry* / Q000528:radiation effects; D011829:Radiation Dosage; D012834:Silver / Q000737:chemistry* / Q000528:radiation effects; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D011166:Porphyrins; D012834:Silver; D043182:Carboxylesterase