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Single-molecule Detection of Reactive Oxygen Species: Application to Photocatalytic Reactions
Authors:Takashi Tachikawa  Tetsuro Majima
Institution:(1) The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
Abstract:In this review, we have focused on the oxidation reactions of single dye molecules by reactive oxygen species (ROS). The methodologies for the single-molecule detection of ROS, such as hydroxyl radical (HO), singlet oxygen (O2(a1Δg)), and hydrogen peroxide (H2O2), have been introduced together with examples. In particular, a successful application using the single-molecule fluorescence technique for the investigation of the TiO2 photocatalytic oxidation reactions is demonstrated in detail.
Keywords:Single-molecule fluorescence spectroscopy  Reactive oxygen species  TiO2 photocatalyst  Photooxidation
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