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Light-driven electron injection from a biotinylated triarylamine donor to [Ru(diimine)3]2+-labeled streptavidin

Keller, Sascha G. and Pannwitz, Andrea and Schwizer, Fabian and Klehr, Juliane and Wenger, Oliver S. and Ward, Thomas R.. (2016) Light-driven electron injection from a biotinylated triarylamine donor to [Ru(diimine)3]2+-labeled streptavidin. Organic and Biomolecular Chemistry, 14 (30). pp. 7197-7201.

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Official URL: http://edoc.unibas.ch/52008/

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Abstract

Electron transfer from a biotinylated electron donor to photochemically generated Ru(III) complexes covalently anchored to streptavidin is demonstrated by means of time-resolved laser spectroscopy. Through site-selective mutagenesis, a single cysteine residue was engineered at four different positions on streptavidin, and a Ru(II) tris-diimine complex was then bioconjugated to the exposed cysteines. A biotinylated triarylamine electron donor was added to the Ru(II)-modified streptavidins to afford dyads localized within a streptavidin host. The resulting systems were subjected to electron transfer studies. In some of the explored mutants, the phototriggered electron transfer between triarylamine and Ru(III) is complete within 10 ns, thus highlighting the potential of such artificial metalloenzymes to perform photoredox catalysis.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Wenger)
05 Faculty of Science > Departement Chemie > Chemie > Bioanorganische Chemie (Ward)
UniBasel Contributors:Wenger, Oliver and Keller, Sascha and Pannwitz, Andrea and Ward, Thomas R. and Schwizer, Fabian and Klehr, Juliane
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:1477-0520
e-ISSN:1477-0539
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:26 Apr 2017 14:36
Deposited On:11 Jan 2017 15:30

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