ISSN:
0006-3525
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Far-infrared spectra in the region from 700 to 60 cm-1 have been measured for the α-helix structures of poly(L-α-amino-n-butyric acid), poly-L-norvaline, poly-L-norleucine, and poly-L-leucine and for the β-form structures of poly(L-α-amino-n-butyric acid), poly-L-valine, poly(DL-amino-n-butyric acid), poly-DL-norvaline, and poly-DL-norleucine. The changes of the spectra on N-deuteration have been measured in the region between 700 and 400 cm-1. It is concluded that, the α-helix has characteristic bauds near 690, 650, 610, 380, 150, and 100 cm-1, and that the β-form has characteristic bands near 700, 240, and 120 cm-1. The main-chain vibrations in the region from 600 to 200 cm-1 are strongly coupled with the side-chain deformation vibrations.
Zusätzliches Material:
4 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/bip.1969.360070503
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