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Excited-state Raman spectra in the luminescent states of Ru(bpy)32+ in solid phases

โœ Scribed by Elmars Krausz

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
257 KB
Volume
116
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Excited-state resonance Raman (ERR) spectra of Ru(bpy)32+ in solid phases show a broad continuum in the 1500 cm -1 region of the excited-state 2,2'-bipyridine (bpy) ring modes. Studies of 1 : 1 water/glycol mixtures above and well below the glass-forming temperature lead to disappearance of the discrete frequencies observed in liquid solutions and replacement by a broad scattering. ERR of the complex where one bpy was replaced by bpy(5,5'-dicarboxylic acid) does not show this behaviour. These results are taken as evidence that charge localization takes place rapidly in the solutions but is inhibited in rigid media.

๐Ÿ“œ SIMILAR VOLUMES

Enhancement and shifts in the excited-st
Enhancement and shifts in the excited-state resonance raman spectrum of Ru(bpy)32+ in anionic micelles
โœ Joy T. Kunjappu; P. Somasundaran; N.J. Turro ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 385 KB

Raman and luminescence spectra of Ru(bpy)$+ showed changes in frequencies and intensities in anionic micelles only. The data are interpreted in terms of the localization of the optical electron in a bipyridine ring that is some distance from the negative micellar surface. ' On leave of absence from