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Raman spectroscopy of poly-L-proline in aqueous solution

✍ Scribed by M. Smith; A. G. Walton; J. L. Koenig

Publisher
Wiley (John Wiley & Sons)
Year
1969
Tongue
English
Weight
371 KB
Volume
8
Category
Article
ISSN
0006-3525

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✦ Synopsis

Synopsis

Tlic laser-exvited Raman spectra have been obtained of poly-cproline in the solid and aqueous solution. I n the solid state, the Raman spectra are of the form I1 which is the left-handed helical form with the peptide bonds in the trans configuration. Dissolution of this form in water produced only minor changes in the Raman spectra. The differences in frequencies produced by dissolving the polymer are associated with vibrational modes of the pyrrolidine ring as indicated by comparison with the Raman spectrum of cproline. The similarity of the Raman spectra dictates that the conformations of poly-cproline chain are similar in the solid and aqueous solution.

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