Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 11, Pages 4531-4535Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b13422
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Funding
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Canada Research Chairs Program, Canada's International Development Research Centre (IDRC)
- German National Academy of Sciences Leopoldina [LPDS 2017-15]
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Photogenerated holes in nanometric semiconductors, such as TiO2, constitute remarkable powerful electrophilic centers, capable of capturing an electron from numerous donors such as ethers, or nonactivated substrates like toluene or acetonitrile, and constitute an exceptionally clean and efficient source of free radicals. In contrast with typical free radical precursors, semiconductors generate single radicals (rather than pairs), where the precursors can be readily removed by filtration or centrifugation after use, thus making it a convenient tool in organic chemistry. The process can be described as an example of dystonic proton coupled electron transfer.
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