Determination of Phosphorescence Quantum Yield of Singlet Oxygen O2(1Δg) Photosensitized by Phenalenone in Air-Saturated Carbon Tetrachloride

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  • Shimizu Okiyasu
    Photobiophysics Laboratories, Institute of Natural Sciences, Nagoya City University, Mizuho–ku, Nagoya 467–8501
  • Watanabe Jun
    Photobiophysics Laboratories, Institute of Natural Sciences, Nagoya City University, Mizuho–ku, Nagoya 467–8501
  • Imakubo Keiichi
    Department of Physics, School of Science, Nagoya University, Chikusa–ku, Nagoya 464–8601
  • Naito Shizuo
    Faculty of Economics and Information, Gifu Shotoku Gakuen University, Gifu 500–8288

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タイトル別名
  • Determination of Phosphorescence Quantum Yield of Singlet Oxygen O2(1.DELTA.g) Photosensitized by Phenalenone in Air-Saturated Carbon Tetrachloride.
  • Determination of Phosphorescence Quantu
  • Determination of Phosphorescence Quantum Yield of Singlet Oxygen O<sub><b> 2</b></sub>(<sup><b> 1</b></sup><i>Δ<sub><b> <i>g</i></b></sub></i>) Photosensitized by Phenalenone in Air-Saturated Carbon Tetrachloride

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説明

The phosphorescence quantum yield ΦP (=einsteins emitted/einsteins absorbed by sensitizer) of singlet oxygen (1O2) was measured for an air-saturated CCl4 solution of phenalenone (PH) used as a photosensitizer, by means of a photon-counting technique based on the use of a near-IR-sensitive photomultiplier. Employment of steady-state excitation allowed for the determination of the absolute quantum yield of ΦP=(1.38± 0.05)× 10-3 in CCl4. The result was obtained by direct comparison of the areas under the corrected emission spectra of 1O2 and of quinine bisulfate (QBS) in 1N H2SO4 as a luminescence standard.

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