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Raman spectra of polyglycines

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

Publisher: Wiley (John Wiley & Sons)
Year: 1969
Tongue: English
Weight: 571 KB
Volume: 8
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1969.360080104

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✦ Synopsis

The laser-excited Raman spectrum of helical polyglycine I1 has been ob1,ained.

Oligomers of polyglycine are in the planar zigzag conformation and their llamati spectra are indicative of the spectrum of polyglycine I. The Raman spectra of polyglyciries have bands complementary to the infrared which are sensitive to the conformation of the chain. The spectra of the oligomers have bands sensitive to the length of the polyglycine. The Raman spectra of di-and triglycine in aqueous solution suggest the conformation is neither planar nor helical.

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## Abstract The sequential copolymers of glycine and L‐alanine, L‐valine and L‐alanine, L‐leucine and L‐alanine, and L‐phenylalanine and L‐alanine and those containing the L‐proline residues were synthesized. The infrared spectra in the region from 700 to 200 cm^‐1^ were measured for these polypept