On the nature of the sulfur chromophores in ultramarine blue, green, violet, and pink and of the selenium chromophore in ultramarine selenium: characterization of radical anions by electronic and resonance Raman spectroscopy and the determination of their excited-state geometries

1983 ◽  
Vol 22 (19) ◽  
pp. 2766-2772 ◽  
Author(s):  
Robin J. H. Clark ◽  
Trevor J. Dines ◽  
Mohamedally Kurmoo
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Radical Anions ◽  
Ultramarine Blue

scholarly journals Determination of the Lowest Excited State of Metal Complexes of Dipyrido[3, 2-a:2′,3′-c]Phenazine

1999 ◽  
Vol 19 (1-4) ◽  
pp. 287-289
Author(s):  
Mark R. Waterland ◽  
Keith C. Gordon
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
Metal Complexes ◽  
Excited States ◽  
Copper Complexes ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Time Resolved ◽  
State Data

The nature of the lowest excited state of rhenium and copper complexes of dipyrido[3,2- a:2′ ,3′-c]phenazine (Dppz) has been determined using Resonance Raman, Time- Resolved Resonance Raman Spectroscopy and Spectroelectrochemistry. Comparison of spectroelectrochemical data and excited state data show that for the complexes studied no reduced ligand bands are observed in the excited state spectra thus the lowest excited states are all Ligand Centred in nature. The use of substituents at the 11 and/or 12 position of the ligand has no effect on the excited state ordering.

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