Abstract
AbstractA strong magnetic field has been utilized to orient the liquid crystalline phase of concentrated polypeptide solutions enabeling the preparation of nematic solid films. The uniaxially oriented nematic films are suitable for x‐ray studies of the polypeptide backbone chain conformation. A distorted α‐helix with 3.5 residues per turn is observed in nematic films of the L‐isomer of poly (benzyl glutamate) when the film is cast from chloroform. The normal α‐helix (3.6 residues per turn) is found in similarly prepared films cast from dichloromethane.
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