Abstract
The effective utilization of solar energy requires photocatalytic reactions with high quantum efficiency. Water is the most abundant reactant that can be used as an oxygen source in efficient photocatalytic reactions, just as nature uses water in an oxygenic photosynthesis. We report that photocatalytic oxygenation of organic substrates such as sodium p-styrene sulfonate occurs with nearly 100% quantum efficiency using manganese(III) porphyrins as an oxygenation catalyst, [RuII(bpy)3]2+ (bpy = 2,2′2-bipyridine) as a photosensitized electron-transfer catalyst, [CoIII(NH3)5Cl]2+ as a low-cost and weak one-electron oxidant, and water as an oxygen source in a phosphate buffer solution (pH 7.4). A high-valent manganese-oxo porphyrin is proposed as an active oxidant that effects the oxygenation reactions.
| Original language | English |
|---|---|
| Pages (from-to) | 38-41 |
| Number of pages | 4 |
| Journal | Nature Chemistry |
| Volume | 3 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2011 |
Bibliographical note
Funding Information:This work was supported by a Grant-in-Aid (no. 20108010 to S.F.) and a Global COE program, ‘the Global Education and Research Center for Bio-Environmental Chemistry’ from the Ministry of Education, Culture, Sports, Science and Technology, Japan (to S.F.), and The National Research Foundation (NRF) and the Ministry of Education and Science Technology (MEST) of Korea through the WCU (R31-2008-000-10010-0) and GRL (2010-00353) Programs (to S.F. and W.N.) and the Creative Research Initiatives Program (to W.N.).