Ultrafast spectroscopy of a photochromic ruthenium sulfoxide complex

Beth Anne McClure; Jeffrey J Rack

doi:10.1021/ic200532p

Ultrafast spectroscopy of a photochromic ruthenium sulfoxide complex

Inorg Chem. 2011 Aug 15;50(16):7586-90. doi: 10.1021/ic200532p. Epub 2011 Jul 19.

Authors

Beth Anne McClure¹, Jeffrey J Rack

Affiliation

¹ Department of Chemistry and Biochemistry, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, USA.

PMID: 21770450
DOI: 10.1021/ic200532p

Abstract

Photochromic [Ru(bpy)(2)(OSO)](PF(6)), where bpy is 2,2'-bipyridine and OSO is 2-methylsulfinylbenzoate, was investigated by femtosecond transient absorption spectroscopy. The results show that for both S- and O-bonded isomers, a (3)MLCT state is formed on a femtosecond time scale. Also observed is the formation of multiple metal-to-ligand charge-transfer (MLCT) states, representing different conformers, prior to isomerization on the picosecond time scale. These results and others are compiled in an energy diagram depicting these results.