Abstract
The persistence length and flexural rigidity of the α-helix of poly(γ-benzyl-L-glutamate) have been found to be 1000±100Å and 4±0.4×10−19 dyn/cm2, respectively, from a dielectric study in m-cresol. Since the electric dipole moment of the α-helix is expected to be proportional to the end-to-end distance, flexural rigidity can be estimated in the theoretical framework of the stiff-chain model. The effect of side-chain moment is also discussed.
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Wada, A., Kihara, H. On the Rigidity of the α-Helix as Measured by Dielectric Studies. Polym J 3, 482–487 (1972). https://doi.org/10.1295/polymj.3.482
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DOI: https://doi.org/10.1295/polymj.3.482