Thermal stability, photochromic sensitivity and optical properties of [Ru(bpy)(2)(OSOR)](+) compounds with R = Bn, BnCl, BnMe

Autor(en): Dieckmann, Volker
Springfeld, Kristin
Eicke, Sebastian
Imlau, Mirco 
Rack, Jeffrey J.
Stichwörter: ISOMERIZATION; LINKAGE ISOMERS; METASTABLE ELECTRONIC STATES; NITROSYL; Optics; RUTHENIUM SULFOXIDE COMPLEXES; SWITCHES
Erscheinungsdatum: 2010
Herausgeber: OPTICAL SOC AMER
Journal: OPTICS EXPRESS
Volumen: 18
Ausgabe: 22
Startseite: 23495
Seitenende: 23503
Zusammenfassung: 
The influence of ligand substitution on the photochromic properties of [Ru(bpy)(2)(OSOR)]center dot PF6 compounds (bpy = 2,2'-bipyridine, OSO = 2-methylsulfinylbenzoate) dissolved in propylene carbonate is studied by UV/VIS laser-spectroscopy as a function of temperature and exposure. The group R is either Bn (CH2C6H5), BnCl or BnMe. The photochromic properties originate from a phototriggered linkage isomerization located at the SO ligand. It is shown that the thermal stability of the studied compounds can be varied by ligand substitution in the range of 1.6 x 10(3) s to 3.9 x 10(4) s. In contrast, absorption spectra of ground and metastable states as well as the characteristic exposure of the photochromic response remain unchanged. The results are explained in the frame of photoinduced linkage isomerization located at the SO ligand. (C) 2010 Optical Society of America
ISSN: 10944087
DOI: 10.1364/OE.18.023495

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