The helix-coil transition temperature Tc of poly(Y-benzy1 bglutamate) in binary solvent mixtures of dichloroacetic acid and l,bdichlorobutane, 1-chlorooctane, or 1chlorododecane have been measured. A treatment is presented with which the transition enthalpy can be calculated from the observed depend
Effect of polydispersity on the n.m.r. spectra of poly(γ-benzyl-l-glutamate) through the helix → coil transition
✍ Scribed by E.M. Bradbury; C. Crane-Robinson; P.G. Hartman
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 424 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0032-3861
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## Abstract The thermal helix–coil transition of four samples of poly(γ‐benzyl‐L‐glutamate) in the dioxane–dichloroacetic acid (DCA) mixture was studied by optical rotatory dispersion method. The transition occurred at very high DCA content (97.5% by weight) in this system. The transition parameter
## Abstract The coil to helix conformational transitions undergone by poly‐γ‐benzyl‐~L~‐glutamate in solutions of haloacetic acids and various cosolvents were studied by means of proton magnetic resonance. The results indicate a very small solvent dependence of the α‐CH Helix–coil chemical shift di
The helix-coil transition of poly(ybenzy1 L-glutamate) was studied by comparing proton magnetic relaxation behavior with optical activity studies. The transition temperatnre as determined by magnetic relaxation was lower than that obtained by optical activity. The relationship of these experiments