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Author
V.A. Nguyen
R.M. Williams
Year
2012
Title
Bis-semiquinone (bi-radical) formation by photoinduced proton coupled electron transfer in covalently linked catechol-quinone systems: Aviram's hemiquinones revisited
Journal
Photochemical & Photobiological Sciences
Volume | Issue number
11 | 6
Pages (from-to)
957-961
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Van 't Hoff Institute for Molecular Sciences (HIMS)
Abstract
The structure and reactivity of a covalently linked catechol-ortho-benzoquinone (hemiquinone) is studied by UV-Vis and IR absorption spectroscopy. Nanosecond transient absorption spectroscopy of the hemiquinone reveals the formation of bi-radical state consisting of two semiquinone units. It is a long-lived state resulting from proton coupled electron transfer (PCET).
URL
go to publisher's site
Language
English
Permalink
http://hdl.handle.net/11245/1.372162

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