Bis-semiquinone (bi-radical) formation by photoinduced proton coupled electron transfer in covalently linked catechol-quinone systems: Aviram's hemiquinones revisited

Nguyen, V.A.; Williams, R.M.

doi:https://doi.org/10.1039/c2pp05378k

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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