Structural Characterization and Photocurrent Properties of cis-di(thiocyanato)-bis(4,4$'$-dicarboxy-2,2$'$-bipyridine) Ruthenium(II) Monolayers on the Gold Surfaces
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概要
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A self-assembled monolayer of cis-di(thiocyanato)-bis(4,4$'$-dicarboxy-2,2$'$-bipyridine) ruthenium(II) (denoted as N3) was prepared on a gold electrode. Immobilization of N3 on the gold electrode through Au (electrode)-S (NCS ligands in N3) bonding was confirmed from electrochemical and X-ray photoelectron spectroscopy (XPS) measurements. In an acetonitrile solution containing methylviologen (MV) and oxygen as electron acceptors, the cathodic photocurrent, based on the photoexcitation of N3, was clearly observed, and the incident photon-to-current conversion efficiency (IPCE) was estimated to be ${\sim}0.1$% at 520 nm. Photocurrent responses were compared between the nanostructured gold electrode prepared from gold nanoparticles and the planar electrode; the former gave larger photocurrents than the latter, especially in the longer wavelength region around the localized surface plasmon bands of gold nanoparticles.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-04-15
著者
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Terasaki Nao
Department Of Materials Physics And Chemistry Graduate School Of Engineering Kyushu University
-
Yamada Sunao
Department Of Applied Chemistry Faculty Of Engineering Kyushu University
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Nitahara Satoshi
Department Of Applied Chemistry Kyushu University
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Akiyama Tsuyoshi
Department Of Applied Chemistry Faculty Of Engineering Kyushu University
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Terasaki Nao
Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan
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Nitahara Satoshi
Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan
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Akiyama Tsuyoshi
Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan
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