Facile Synthesis and Visualization of Janus Double-Brush Copolymers

Well-defined double-brush copolymers with each graft site carrying a polystyrene (PSt) graft and a polylactide (PLA) graft were synthesized by simultaneous reversible addition–fragmentation chain transfer (RAFT) and ring-opening polymerization (ROP) processes, followed by ring-opening metathesis pol...

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Published inACS macro letters Vol. 1; no. 1; pp. 52 - 56
Main Authors Li, Yukun, Themistou, Efrosyni, Zou, Jiong, Das, Biswa P, Tsianou, Marina, Cheng, Chong
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 17.01.2012
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Summary:Well-defined double-brush copolymers with each graft site carrying a polystyrene (PSt) graft and a polylactide (PLA) graft were synthesized by simultaneous reversible addition–fragmentation chain transfer (RAFT) and ring-opening polymerization (ROP) processes, followed by ring-opening metathesis polymerization (ROMP) “grafting through” of the resulting diblock macromonomer (MM). Their Janus-type morphologies were detected by transmission electron microscopy (TEM) imaging after thermal annealing to facilitate the intramolecular self-assembly of PSt and PLA grafts. This finding provides critical evidence to verify double-brush copolymers as Janus nanomaterials.
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ISSN:2161-1653
2161-1653
DOI:10.1021/mz200013e