Highly Electrophilic Titania Hole as a Versatile and Efficient Photochemical Free Radical Source

Hainer, Andrew; Marina, Nancy; Rincon, Stefanie; Costa, Paolo; Lanterna, Anabel E.; Scaiano, Juan C.

Abstract

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.

Citation

Hainer, A., Marina, N., Rincon, S., Costa, P., Lanterna, A. E., & Scaiano, J. C. (2019). Highly Electrophilic Titania Hole as a Versatile and Efficient Photochemical Free Radical Source. Journal of the American Chemical Society, 141(11), 4531-4535. https://doi.org/10.1021/jacs.8b13422

• Journal Article Type: Article
• Acceptance Date: Mar 4, 2019
• Online Publication Date: Mar 4, 2019
• Publication Date: Mar 20, 2019
• Deposit Date: Jun 22, 2020
• Publicly Available Date: Aug 7, 2020
• Journal: Journal of the American Chemical Society
• Print ISSN: 0002-7863
• Electronic ISSN: 1520-5126
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 141
• Issue: 11
• Pages: 4531-4535
• DOI: https://doi.org/10.1021/jacs.8b13422
• Keywords: Colloid and Surface Chemistry; Biochemistry; General Chemistry; Catalysis
• Public URL: https://nottingham-repository.worktribe.com/output/4442864
• Publisher URL: https://pubs.acs.org/doi/10.1021/jacs.8b13422
• Additional Information: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © 2019 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/jacs.8b13422