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Epitaxial crystallization of poly (γ‐benzyl L ‐glutamate) on alkali halide single crystals
Author(s) -
Carr S. H.,
Walton A. G.,
Baer Eric
Publication year - 1968
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.1968.360060404
Subject(s) - chemistry , crystallography , crystallization , mesitylene , cleavage (geology) , halide , epitaxy , stereochemistry , inorganic chemistry , materials science , organic chemistry , catalysis , layer (electronics) , fracture (geology) , composite material
Single crystals of poly(γ‐benzyl L ‐glutamate) were formed by epitaxial crystallization from solution in mesitylene on NaCl, KI, and KCl (001) cleavage faces. From electron microscopy and diffraction studies, the structure of these overgrowths was determined to be that of lamellae containing chain‐folded α‐helical macromolecules. The usual type of crystal perfection, that of ordered helix axes and disordered side groups, was exhibited by this synthetic polypeptide. Unique orientation regimes were observed with each substrate.