Excited state relaxation of Ru(bpy)32+ at low temperature. Time evolution of the emission quantum yield
✍ Scribed by Haeng-Boo Kim; Noboru Kitamura; Shigeo Tazuke
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 336 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Decay of emission from the metal-to-l&and charge transfer (MLCT) excited state of Ru(bpy):+ (bpy=2,2'-bipyridine) was studied by single photon counting as well as by nanosecond time-resolved emission spectroscopy in 4 : 1 ethanol-methanol. While the MLCT emission decay of *Ru( bpy):+ could bc fitted by a double exponential function at 125 K, the decay profile was strongly dependent on the monitoring wavelength. This dependence, and a rise component detected for the emission at the lower energy edge of the spectrum, were interpreted on the basis of a time-dependent shift of the emission spectrum.