Efficient photocatalytic proton-coupled electron-transfer reduction of O 2 using a saddle-distorted porphyrin as a photocatalyst

Emi Aoki, Wataru Suzuki, Hiroaki Kotani, Tomoya Ishizuka, Hayato Sakai, Taku Hasobe, Takahiko Kojima

Research output: Contribution to journal › Article

Abstract

Photocatalytic O 2 reduction reactions proceeded to produce H 2 O 2 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.

Original languageEnglish
Pages (from-to)4925-4928
Number of pages4
JournalChemical Communications
Volume55
Issue number34
DOIs
Publication statusPublished - 2019 Jan 1

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Porphyrins
Photolysis
Quantum yield
Photocatalysts
Protons
Kinetics
Electrons
Lasers

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Efficient photocatalytic proton-coupled electron-transfer reduction of O 2 using a saddle-distorted porphyrin as a photocatalyst . / Aoki, Emi; Suzuki, Wataru; Kotani, Hiroaki; Ishizuka, Tomoya; Sakai, Hayato; Hasobe, Taku; Kojima, Takahiko.

In: Chemical Communications, Vol. 55, No. 34, 01.01.2019, p. 4925-4928.

Research output: Contribution to journal › Article

Aoki, E, Suzuki, W, Kotani, H, Ishizuka, T, Sakai, H, Hasobe, T & Kojima, T 2019, ' Efficient photocatalytic proton-coupled electron-transfer reduction of O 2 using a saddle-distorted porphyrin as a photocatalyst ', Chemical Communications, vol. 55, no. 34, pp. 4925-4928. https://doi.org/10.1039/c9cc01547g
Aoki E, Suzuki W, Kotani H, Ishizuka T, Sakai H, Hasobe T et al. Efficient photocatalytic proton-coupled electron-transfer reduction of O 2 using a saddle-distorted porphyrin as a photocatalyst Chemical Communications. 2019 Jan 1;55(34):4925-4928. https://doi.org/10.1039/c9cc01547g
Aoki, Emi ; Suzuki, Wataru ; Kotani, Hiroaki ; Ishizuka, Tomoya ; Sakai, Hayato ; Hasobe, Taku ; Kojima, Takahiko. / Efficient photocatalytic proton-coupled electron-transfer reduction of O 2 using a saddle-distorted porphyrin as a photocatalyst In: Chemical Communications. 2019 ; Vol. 55, No. 34. pp. 4925-4928.
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