Resonance Raman spectra of adsorbed species at solid-gas interfaces. 1. p-Nitrosodimethylaniline adsorbed on silica and alumina surfaces

1981 ◽  
Vol 85 (8) ◽  
pp. 995-1004 ◽  
Author(s):  
James F. Brazdil ◽  
Ernest B. Yeager
Keyword(s):  
Raman Spectra ◽  
Resonance Raman ◽  
Adsorbed Species ◽  
Resonance Raman Spectra

scholarly journals Low-temperature resonance-Raman spectra of Japanese-lacquer-tree (Rhus vernicifera) laccase, type-2-copper-depleted laccase and H2O2-treated type-2-copper-depleted laccase

1983 ◽  
Vol 213 (2) ◽  
pp. 503-506 ◽  
Author(s):  
G Musci ◽  
A Desideri ◽  
L Morpurgo ◽  
A Garnier-Suillerot ◽  
L Tosi
Keyword(s):  
Raman Spectra ◽  
Strong Dependence ◽  
Resonance Raman ◽  
Local Symmetry ◽  
Structural Rearrangements ◽  
Blue Copper ◽  
Copper Site ◽  
Resonance Raman Spectra ◽  
Rhus Vernicifera

Resonance-Raman spectra of Japanese-lacquer-tree (Rhus vernicifera) laccase, type-2-copper-depleted laccase and the latter form treated with H2O2 were measured in liquid and frozen solution, on excitation into the 600 nm absorption band. Significant changes in intensity and/or frequency of the bands lying in the 370-430 cm-1 region were observed on freezing, indicating local structural rearrangements taking place at the blue copper site. These findings corroborate previous suggestions based on e.p.r. measurements and redox data [Morpurgo, Calabrese, Desideri & Rotilio (1981) Biochem. J. 193, 639-642]. They show the strong dependence of the physical properties of blue copper centres on local symmetry. Some conclusions on the origin of the Raman bands are also drawn.

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