Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 14, Issue 28, Pages 8624-8631Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200800762
Keywords
block copolymers; micelles; polyferrocenylsilane; polypeptides; rod-coil
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Funding
- NSERC Canada
- European Union
- Royal Society
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A new type of metallopolymer-polypeptide block copolymer poly-(ferrocenyldimethylsilane)-b-poly (epsilon-benzyloxycarbonyl-L-lysine) was synthesized by ring-opening polymerization of E-benzyloxycarbonyl-L-lysine N-carboxyanhydride initiated by using a primary amino-terminated poly(ferrocenyldimethylsilane). Studies on the self-organization behavior of this polypeptide block copolymer in both the bulk state and in solution were performed. In the bulk state, a cylindricalin-lamellar structure was observed in a compositionally asymmetric sample. Rod-like micelles with a polyferrocenylsilane core formed in a polypeptide- selective solvent alone or in the presence of a common solvent. Significantly, an additional small quantity of the common solvent assisted the formation of longer micelles and micelles with better shape-regularity. This is attributed to a decrease in the number of nucleation events; and PFS core reorganization effects.
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