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Tyrosine groups enhance photoinduced intramolecular electron transfer in polypyridyl ruthenium(II) complexes

Paper ID Volume ID Publish Year Pages File Format Full-Text
28412 44074 2007 8 PDF Available
Title
Tyrosine groups enhance photoinduced intramolecular electron transfer in polypyridyl ruthenium(II) complexes
Abstract

The complexes [cis-RuIIL′2L′2(SCN)2 and cis-RuIILL′(SCN)2] (L = 4,4′-bis(ethoxycarbonyl)-2,2′-bipyridine, L′ = 2,2′-bpy-4,4′-CONH-l-tyrosine ethyl ester) are prepared and characterized. Two or four tyrosine ethyl ester groups are covalently linked to a ruthenium polypyridyl photosensitizer as electron donor. Upon light excitation, intermolecular electron transfer from the excited ruthenium(II) to MV2+ occurs, followed by intramolecular electron transfer from tyrosine moieties to Ru(III) with a rate constant of kf > 1 × 108 s−1 (τf < 10 ns).

Keywords
Ruthenium polypyridyl complexes; Tyrosine; Electron transfer; Electron donor; Photosensitizer; Photosynthesis
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Tyrosine groups enhance photoinduced intramolecular electron transfer in polypyridyl ruthenium(II) complexes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 188, Issues 2–3, 20 May 2007, Pages 317–324
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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