The Optical Rotatory Properties of Poly-L-proline
β Scribed by Bovey, F. A.; Hood, F. P.
- Book ID
- 126862164
- Publisher
- American Chemical Society
- Year
- 1966
- Tongue
- English
- Weight
- 242 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
## Abstract A nonβperturbational technique is used to calculate the circular dichroism and absorption spectra of polypeptide chains having conformations similar to that of polyβLβproline II. The method employs a Bogoliubov exciton formalism, from which the various optical terms associated with para
A block copolymer [y-Et-~~-Glu], [~-Trp], was prepared using N-carboxy anhydrides (NCA) of L-tryptophan and y-ethyl DL-glutamate. The block copolymer, dissolved in trifluoroethanol (TFE)-dichloroacetic acid (DCA) mixtures, exhibited a sharp change in the specific rotation a t 546 mp when the solvent
Poly-0-acetyl-hydroxy-L-proline, forms I and I1 have been studied by optical rotatory dispersion (ORD) and ultraviolet spectrophotometry in solution and in the solid state. Cotton effects of opposite sign, but not mirror images, were observed in the 250 mp region for the two forms (Form I, peak 278