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Isolation of preresonance and out-of-phase dual circular polarization Raman optical activity

✍ Scribed by Gu-Sheng Yu; Laurence A. Nafie

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
759 KB
Volume
222
Category
Article
ISSN
0009-2614

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✦ Synopsis

We report the first isolation of preresonance Raman scattering behavior in Raman optical activity (ROA) and the first measurement of out-of-phase dual circular polarization (DCPu) ROA. Using a series of molecules of increasing delocalized electronic structure, we observe a correlated increase in the degree to which the DCPr and ICP, ROA backscattering spectra differ from one another. Through this comparison, ROA is shown to be a sensitive way of detecting the presence of preresonance Raman scattering intensity using a single Raman excitation wavelength.

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The results of an extensive upgrade of a backscattering dual circular polarization (DCP) Raman optical activity (ROA) spectrometer are reported. The instrument incorporates recent advances in electro-optical technology for the measurement of Raman spectra. The primary improvements are the replacemen