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Excited state isomerization in a new ruthenium chelating sulfoxide complex

Paper ID Volume ID Publish Year Pages File Format Full-Text
28487 44077 2008 5 PDF Available
Title
Excited state isomerization in a new ruthenium chelating sulfoxide complex
Abstract

Electrochemical and photochemical studies of a photochromic complex with a chelating sulfoxide are reported. Electrochemical data do not support evidence for isomerization following electrochemical oxidation. However, irradiation of solutions containing [Ru(bpy)2(PhNSO)](PF6)2 (bpy is 2,2′-bipyridine, PhNSO is N-benzylidine-2-(ethylsulfinyl)ethanamine) demonstrate excited state S → O isomerization. The S-bonded absorption maximum is 382 nm, while the O-bonded isomer features absorption maxima at 360 and 486 nm. The quantum yield of isomerization is 0.033 and the S-bonded isomer is emissive at low temperature (77 K). These data and an electronic structural model explaining this reactivity are introduced.

Keywords
Linkage isomerization; Chelating sulfoxide; Ruthenium; Emission spectroscopy; Photochromic compounds
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Excited state isomerization in a new ruthenium chelating sulfoxide complex
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 200, Issue 1, 15 November 2008, Pages 39–43
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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