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Two‐Color Reversible Switching in a Photochromic Ruthenium Sulfoxide Complex
Author(s) -
McClure Beth Anne,
Rack Jeffrey J.
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200903553
Subject(s) - photochromism , ruthenium , isomerization , pyridine , photochemistry , chemistry , excitation , sulfoxide , bipyridine , computer science , organic chemistry , catalysis , physics , crystal structure , quantum mechanics
On the flipside : A reversible photochromic mechanism for the complex [Ru(bpy) 2 (pySO)] 2+ (bpy=2,2′‐bipyridine, pySO=2‐(isopropylsulfinylmethyl)pyridine) is presented. Isomerization from the S‐bonded (see picture; blue) to the O‐bonded form (red) occurs upon excitation with UV light with a time constant τ of 1.5 ns ( Φ =0.11), for the reverse process τ =6.3 ns ( Φ =0.027).