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Preresonance Raman studies of poly(L-lysine), poly(L-glutamic acid), and deuterated N-methylacetamides

✍ Scribed by Yoko Sugawara; Issei Harada; Hiroatsu Matsuura; Takehiko Shimanouchi

Publisher
Wiley (John Wiley & Sons)
Year
1978
Tongue
English
Weight
581 KB
Volume
17
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

The Raman spectra of poly(L‐lysine) with various structures, ionized poly(L‐glutamic acid), and deuterated N‐methylacetamides have been observed using visible and the 257.3‐nm laser lines as the light source. Most of the Raman bands with significantly enhanced intensities in the uv‐excited spectra of the polymers have been assigned to the vibrations associated with the CO and C–N stretching modes, the amide I, II, III, I′, II′, and III′, with reference to the results obtained for simple amide molecules including the deuterated N‐methylacetamides. Several amide frequencies have been newly identified and the structures of the polymers have been discussed through the comparison of the Raman and ir amide frequencies.

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