期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 29, 期 4, 页码 299-303出版社
WILEY-BLACKWELL
DOI: 10.1002/marc.200700666
关键词
biopolymers; block copolymers; self-assembly; supramolecular complexes
A peptide-synthetic hybrid block copolymer, poly(ethylene oxide) -block-poly(L-glutamic acid), is shown to form supramolecular complexes with primary alkylamines of varying alkyl chain lengths (8 to 18 methylene units) in organic solvents via acid-base proton transfer and subsequent ionic bonding. The peptidic block being in the a-helical conformation, these materials behave as coil-'' hairy rod '' block copolymers, and show hierarchically self-organized nanostructures in the solid state. X-ray scattering measurements show mesomorphic behavior at the length scales of both the overall block copolymer and the polypeptide-alkylammonium complex.
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