ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The effect of electronic resonances on the cross sections for Raman scattering from localized and delocalized vibrational modes is considered for the cases where the resonance is with a localized electronic state and with a delocalized electronic state. It is concluded that resonance with a localized electronic state increases the Raman cross section of the localized mode significantly more than that of the delocalized mode while resonance with a delocalized electronic state has the opposite effect. Furthermore, a coupling of electronic states following a conformational change in a polymer is predicted to decrease the resonance Raman cross section of a localized vibrational mode. Consequently, observations of such effects will serve to identify local phonon modes in mixed molecular crystals and provide information about conformational change in biomolecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250050310
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