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Chiroptical Properties of Multiple‐Helical, Oligopeptide‐Substituted Poly(diacetylene)s in Solution
Author(s) -
Weiss Jan,
Jahnke Eike,
Frauenrath Holger
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700786
Subject(s) - diacetylene , oligopeptide , supramolecular chemistry , polymer chemistry , polymerization , materials science , polymer , supramolecular polymers , copolymer , photochemistry , chemistry , peptide , organic chemistry , molecule , composite material , biochemistry
Three diacetylene macromonomers based on oligopeptide‐polymer conjugates were designed to self‐organize into uniform supramolecular polymers which exhibited multiple‐helical superstructures constituted from a defined, finite number of laminated single β ‐sheet tapes. These supramolecular polymers were then converted into poly(diacetylene)s with multiple‐helical quaternary structures. The nature of the latter in solution was investigated by UV, CD, and Raman spectroscopy. The polymerization proceeded under preservation of the previously assembled multiple‐helical superstructures, and the deaggregation of the oligopeptide β ‐sheets before and after polymerization proved the mutual stabilization of the helical poly(diacetylene) backbone conformation and hydrogen bonded β ‐sheet arrays.