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

Emi Aoki | Zendy; Wataru Suzuki | Zendy; Hiroaki Kotani | Zendy; Tomoya Ishizuka | Zendy; Hayato Sakai | Zendy; Taku Hasobe | Zendy; Takahiko Kojima | Zendy

Open Access

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

Author(s) -

Emi Aoki,

Wataru Suzuki,

Hiroaki Kotani,

Tomoya Ishizuka,

Hayato Sakai,

Taku Hasobe,

Takahiko Kojima

Publication year - 2019

Publication title -

chemical communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.837

H-Index - 333

eISSN - 1364-548X

pISSN - 1359-7345

DOI - 10.1039/c9cc01547g

Subject(s) - porphyrin , photocatalysis , electron transfer , saddle , electron , reduction (mathematics) , photochemistry , proton , chemistry , materials science , catalysis , physics , quantum mechanics , organic chemistry , mathematics , mathematical optimization , geometry

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.

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