期刊
COLLOID AND POLYMER SCIENCE
卷 291, 期 11, 页码 2561-2567出版社
SPRINGER
DOI: 10.1007/s00396-013-3001-2
关键词
Amphiphiles; Triphilic block copolymers; Core-shell-corona micelles; RAFT; Cryo-TEM; Multicompartment micelles
资金
- Deutsche Forschungsgemeinschaft [LA611/5, BO1000/8]
An amphiphilic linear ternary block copolymer was synthesised in three consecutive steps via reversible addition-fragmentation chain transfer polymerisation. Oligo(ethylene glycol) monomethyl ether acrylate was engaged as a hydrophilic building block, while benzyl acrylate and 3-tris(trimethylsiloxy)silyl propyl acrylate served as hydrophobic building blocks. The resulting triphilic copolymer consists thus of a hydrophilic (A) and two mutually incompatible soft hydrophobic blocks, namely, a lipophilic (B) and a silicone-based (C) block, with all blocks having glass transition temperatures well below 0 A degrees C. The triphilic copolymer self-assembles into spherical multicompartment micellar aggregates in aqueous solution, where the two hydrophobic blocks undergo local phase separation into various ultrastructures as evidenced by cryogenic transmission electron microscopy. Thus, a silicone-based polymer block can replace the hitherto typically employed fluorocarbon-based hydrophobic blocks in triphilic block copolymers for inducing multicompartmentalisation.
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