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RAMAN AND ABSORPTION SPECTRA OF SEVERAL ANHYDROVITAMIN A ISOMERS

Mark F. Granville, Bryan E. Kohler, R. A. Auerbach

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Abstract

Raman spectra of chromatographically pure cis-trans isomers of Anhydrovitamin $A_{1}$ have been obtained in $77^{\\circ}\\;K$ glasses with laser excitation at several wavelengths. The intensity and polarization ratio behavior will be presented along with a discussion of the $77^{\\circ}\\;K$ absorption spectra. Both the single-bond and double-bond vibrational modes are found to increase in frequency upon electronic excitation.

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What this paper is about

Raman spectra of chromatographically pure cis-trans isomers of Anhydrovitamin $A_{1}$ have been obtained in $77^{\\circ}\\;K$ glasses with laser excitation at several wavelengths. The intensity and polarization ratio behavior will be presented along with a discussion of the $77^{\\circ}\\;K$ absorption spectra. Both the single-bond and double-bond vibrational modes are found to increase in frequency upon electronic excitation.

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Available abstract

Raman spectra of chromatographically pure cis-trans isomers of Anhydrovitamin $A_{1}$ have been obtained in $77^{\\circ}\\;K$ glasses with laser excitation at several wavelengths. The intensity and polarization ratio behavior will be presented along with a discussion of the $77^{\\circ}\\;K$ absorption spectra. Both the single-bond and double-bond vibrational modes are found to increase in frequency upon electronic excitation.

Key concepts: Raman spectroscopy, Spectral line, Absorption (acoustics), Absorption spectroscopy, Chemistry, Materials science, Physics, Optics

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