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Issue 6, 2012
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Bis-semiquinone (bi-radical) formation by photoinduced proton coupled electron transfer in covalently linked catechol–quinone systems: Aviram's hemiquinones revisited

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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).

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

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Publication details

The article was received on 14 Nov 2011, accepted on 24 Dec 2011 and first published on 23 Jan 2012


Article type: Paper
DOI: 10.1039/C2PP05378K
Citation: Photochem. Photobiol. Sci., 2012,11, 957-961
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    Bis-semiquinone (bi-radical) formation by photoinduced proton coupled electron transfer in covalently linked catechol–quinone systems: Aviram's hemiquinones revisited

    N. Vân Anh and R. M. Williams, Photochem. Photobiol. Sci., 2012, 11, 957
    DOI: 10.1039/C2PP05378K

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