Resonant Raman scattering

Walmsiey I A, Wise F W and Tang C L 1989 On the difference between quantum beats in impulsive stimulated Raman scattering and resonance Raman scattering Chem. Phys. Lett. 154 315-20... 

Of special Interest as O2 reduction electrocatalysts are the transition metal macrocycles In the form of layers adsorptlvely attached, chemically bonded or simply physically deposited on an electrode substrate Some of these complexes catalyze the 4-electron reduction of O2 to H2O or 0H while others catalyze principally the 2-electron reduction to the peroxide and/or the peroxide elimination reactions. Various situ spectroscopic techniques have been used to examine the state of these transition metal macrocycle layers on carbon, graphite and metal substrates under various electrochemical conditions. These techniques have Included (a) visible reflectance spectroscopy (b) laser Raman spectroscopy, utilizing surface enhanced Raman scattering and resonant Raman and (c) Mossbauer spectroscopy. This paper will focus on principally the cobalt and Iron phthalocyanlnes and porphyrins. 

Figure 7.1 Energy level diagram Illustrating changes that occur in IR, normal Raman, resonance Raman, and fluorescence. Notation on the figure stands for Rayleigh scattering (R), Stokes Raman scattering (S), and anti-Stokes Raman scattering (A). Reprinted from Ferraro et al. (2003) [4] with permission from Elsevier.

Sr = f2r — (wp — ujs) is the detuning from the Raman resonance at frequency f2r with a half width at half maximum (HWHM) of Tr. N is the number density of Raman-active scatterers and C is a proportionality constant. 

D. A. Long, Raman Spectroscopy , McGraw-Hill, New York, 1977. The most comprehensive, unified and fully illustrated treatment of the basic theory and physical principles of Raman, resonance Raman and nonlinear Raman scattering. Readers will be inspired by the elegance and information content of the technique to delve further into the book. 

Fainstein A, Jusserand B (2007) Raman scattering in resonant cavities. In Cardona M, Merlin R (eds) Light scattering in solid IX, vol 108. Springer-Verlag, Berlin, p 17... 

Normal Raman will be used to describe scattering without resonance or surface enhancement. The older literature often uses the term spontaneous Raman. ... 

Figure 6.1 Spectroscopic transitions for Rayleigh scattering, Stokes and anti-Stokes Raman scattering, and resonance Raman scattering.

Z. Dhaouadi, M. Ghomi, J.C. Austin, R.B. Girling, R.E. Hester, P. Mojzes, L. Chinsky, P.Y. Turpin, C. Coulombeau, H. Jobic J. Tomkinson (1993). J. Phys. Chem., 97, 1074-1084. Vibrational motions of bases of nucleic acids as revealed by neutron inelastic scattering and resonance Raman spectroscopy. 1. Adenine and its deuterated species. 

---