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Efficient photocatalytic proton-coupled electron-transfer reduction of O2 using a saddle-distorted porphyrin as a photocatalyst

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Abstract

Photocatalytic O2 reduction reactions proceeded to produce H2O2 using a diprotonated saddle-distorted dodecaphenylporphyrin as a photocatalyst. The quantum yield (12%), the turnover number (3000 for 6 h), and the turnover frequency (500 h−1) are achieved in photocatalytic systems based on free-base porphyrins for the first time. The photocatalytic reaction mechanism has been revealed by ns-laser flash photolysis and kinetic analysis.

Graphical abstract: Efficient photocatalytic proton-coupled electron-transfer reduction of O2 using a saddle-distorted porphyrin as a photocatalyst

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Publication details

The article was received on 23 Feb 2019, accepted on 29 Mar 2019 and first published on 29 Mar 2019


Article type: Communication
DOI: 10.1039/C9CC01547G
Citation: Chem. Commun., 2019, Advance Article

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    Efficient photocatalytic proton-coupled electron-transfer reduction of O2 using a saddle-distorted porphyrin as a photocatalyst

    E. Aoki, W. Suzuki, H. Kotani, T. Ishizuka, H. Sakai, T. Hasobe and T. Kojima, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C9CC01547G

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