Bis-semiquinone (bi-radical) formation by photoinduced proton coupled electron transfer in covalently linked catechol-quinone systems: Aviram's hemiquinones revisited
| Authors |
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| Publication date |
2012
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| Journal |
Photochemical & Photobiological Sciences
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| Volume | Issue number |
11 | 6
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| Pages (from-to) |
957-961
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| Organisations |
-
Faculty of Science (FNWI) - Van 't Hoff Institute for Molecular Sciences (HIMS)
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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).
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| Document type |
Article
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| Language |
English
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| Published at |
https://doi.org/10.1039/c2pp05378k
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