Cyclopolymerization of α,ω‐heterodifunctional monomers containing styrene and maleimide moieties |
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| Authors: | Lei Zou Jian'an Liu Ke Zhang Yongming Chen Fu Xi |
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| Affiliation: | 1. Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, the Chinese Academy of Sciences, , Beijing, 100190 China;2. Beijing Mass spectrometry Center, Institute of Chemistry, the Chinese Academy of Sciences, , Beijing, 100190 China |
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| Abstract: | A series of α,ω‐heterodifunctional monomers with styrene (St) and maleimide moieties bridged by a varied length of oligo‐ethylene glycol (OEG) linkers were synthesized. Cyclopolymerizations of these monomers through reversible addition–fragmentation chain transfer‐mediated alternating radical copolymerization between intramolecular St and maleimide moieties were investigated. For the monomers with three or more ethylene glycol (EG) units, their cyclopolymerizations can be realized properly in low monomer feeding concentrations, affording well‐defined cyclopolymers with crown ether encircled in their main chains. Importantly, the cyclopolymerizations of monomers with six or seven EG units in the presence of KPF6 could be enhanced by the supramolecular effects between the OEG linkers and the potassium metal ion. Thus, the monomer feeding concentration could be largely improved, which may benefit preparation of the cyclopolymers with high degrees of copolymerization. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014 , 52, 330–338 |
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| Keywords: | cyclopolymerization host‐guest systems reversible addition‐fragmentation chain transfer polymerization (RAFT) |
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