Enthalpy changes in the helix‐coil transition of poly(γ‐benzyl  L ‐glutamate) | Zendy

Karasz F. E. | Zendy; O'Reilly J. M. | Zendy

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Enthalpy changes in the helix‐coil transition of poly(γ‐benzyl L ‐glutamate)

Author(s) -

Karasz F. E.,

O'Reilly J. M.

Publication year - 1967

Publication title -

biopolymers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.556

H-Index - 125

eISSN - 1097-0282

pISSN - 0006-3525

DOI - 10.1002/bip.1967.360050105

Subject(s) - dichloroacetic acid , chemistry , enthalpy , solvent , helix (gastropod) , electromagnetic coil , thermodynamics , organic chemistry , physics , ecology , biology , snail , quantum mechanics

The helix‐coil transition temperature T c of poly(γ‐benzyl L ‐glutamate) in binary solvent mixtures of dichloroacetic acid and 1,4‐dichlorobutane, 1‐chlorooctane, or 1‐chlorododecane have been measured. A treatment is presented with which the transition enthalpy can be calculated from the observed dependence of T c on solvent composition. Results are compared with previously obtained calorimetric data. The underlying assumptions of the calculation are discussed.

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