Facile Synthesis and Visualization of Janus Double-Brush Copolymers

Yukun Li, Efrosyni Themistou, Jiong Zou, Biswa P. Das, Marina Tsianou, Cheng Chong

Research output: Contribution to journalArticle

91 Citations (Scopus)


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 1 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.
Original languageEnglish
Pages (from-to) 52-56
JournalACS Macro Letters
Issue number1
Publication statusPublished - Jan 2012

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