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Coupling between the helix–coil transition and nematic–isotropic transitions in polypeptide solutions

✍ Scribed by Robert R. Matheson Jr.

Publisher
Wiley (John Wiley & Sons)
Year
1983
Tongue
English
Weight
237 KB
Volume
22
Category
Article
ISSN
0006-3525

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✦ Synopsis

The lattice model of Flory has been extended in order to consider equilibrium between isotropic and nematic phases containing helix-coil type chains. Nearly complete exclusion of coil sequences from the lyotropic nematic phase produces an enhanced cooperativity in the helixxoil transition. In poor solvents this enhancement begins to occur at concentrations typical of some experiments. * The particular conformation in which the chain is completely helical must be examined as a special case. It is used here for the conformation in the nematic phase as an approximation. Further discussion is forthcoming in our work in preparation.

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