This work was supported by 973 project (No. 2007CB613306) and the NSFC (Nos. 20537010, 20772129, and 20777076) and CAS. TEMPO=2,2,6,6-tetramethylpiperidinyloxyl.
Visible-Light-Induced Aerobic Oxidation of Alcohols in a Coupled Photocatalytic System of Dye-Sensitized TiO2 and TEMPO†
Article first published online: 4 NOV 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 47, Issue 50, pages 9730–9733, December 1, 2008
How to Cite
Zhang, M., Chen, C., Ma, W. and Zhao, J. (2008), Visible-Light-Induced Aerobic Oxidation of Alcohols in a Coupled Photocatalytic System of Dye-Sensitized TiO2 and TEMPO. Angew. Chem. Int. Ed., 47: 9730–9733. doi: 10.1002/anie.200803630
- Issue published online: 26 NOV 2008
- Article first published online: 4 NOV 2008
- Manuscript Received: 25 JUL 2008
- 973 project. Grant Number: 2007CB613306
- NSFC. Grant Numbers: 20537010, 20772129, 20777076
- radical reactions ;
- visible light
Like a differential gear: Upon irradiation with visible light, excited dye molecules inject electrons into TiO2 and form dye radicals, which can oxidize TEMPO to TEMPO+, which in turn oxidizes alcohols in the presence of O2 selectively to corresponding aldehydes. One reason for the selectivity is that the irradiation is downshifted to visible light.