Visualization of Active Sites for Plasmon-Induced Electron Transfer Reactions Using Photoelectrochemical Polymerization of Pyrrole

Visualization of Active Sites for Plasmon-Induced Electron Transfer Reactions Using Photoelectrochemical Polymerization of Pyrrole

Spatially selective deposition of conductive polymer was observed at the Au nanostructures supported on TiO2 electrodes via plasmon-induced photopolymerization of pyrrole monomers. The reactions were triggered by the excitation of localized surface plasmon resonance under near-infrared light illumin...

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Veröffentlicht in:Journal of physical chemistry. C 2016-07, Vol.120 (29), p.16051-16058
Hauptverfasser: Minamimoto, Hiro, Toda, Takahiro, Futashima, Ryo, Li, Xiaowei, Suzuki, Kentaro, Yasuda, Satoshi, Murakoshi, Kei
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container_end_page 16058
container_issue 29
container_start_page 16051
container_title Journal of physical chemistry. C
container_volume 120
creator Minamimoto, Hiro
Toda, Takahiro
Futashima, Ryo
Li, Xiaowei
Suzuki, Kentaro
Yasuda, Satoshi
Murakoshi, Kei
description Spatially selective deposition of conductive polymer was observed at the Au nanostructures supported on TiO2 electrodes via plasmon-induced photopolymerization of pyrrole monomers. The reactions were triggered by the excitation of localized surface plasmon resonance under near-infrared light illumination to the plasmon-active Au nanostructures. The morphological characteristics of the deposited polypyrrole prove the localization of the reaction-active sites in the plasmon-induced oxidation-reaction system. In addition, the estimation of reaction characteristics provides information on the spatial distribution and the electrochemical potential of the holes to contribute to the reaction. The unique polymer-growing process observed in the present system provides information on the mechanism of plasmon-induced oxidation reaction occurring at the active sites.
doi_str_mv 10.1021/acs.jpcc.5b12727
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title Visualization of Active Sites for Plasmon-Induced Electron Transfer Reactions Using Photoelectrochemical Polymerization of Pyrrole
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