A method for cyclic and tadpole-shaped polymers
A method for cyclic and tadpole-shaped polymers
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一种环状蝌蚪状聚合物的制备方法
DOI：
10.1002/pi.4906
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发表时间：
2015-08
影响因子：
3.2
通讯作者：
Zhang, Ke
中科院分区：
文献类型：
--
作者：
Tang, Qingquan;Zhang, Ke
Reversible addition-fragmentation chain transfer polymerization (RAFT) was used to produce well-defined telechelic poly(N-isopropylacrylamide) (PNIPAM) with dibromomaleimide and dithiobenzoate groups at each end of the polymer chain by virtue of the functional RAFT agent 3,4-dibromo-1-(4-cyano-4-(phenylcarbonothioylthio)pentanoic)-2,5-dihydro-1H-pyrrole-2,5-dione. Cyclic PNIPAM was then obtained using an in situ intramolecular bromomaleimide-thiol substitution reaction after NaBH4 reduction of the dithiobenzoate end group to release a thiol group. In this ring-closure process, another bromo substituent on the maleimide group survived, being a single reactive site for post-functionalizing the cyclic PNIPAM by a second bromomaleimide-thiol substitution reaction. After being reacted with 2-aminoethanethiol, the resultant amino-functionalized cyclic PNIPAM was further demonstrated as a building block to construct a tadpole-shaped block copolymer by coupling with linear succinimidyl ester end-functionalized poly(ethylene oxide) based on active ester click chemistry. (c) 2015 Society of Chemical Industry
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通讯作者：
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胶束介质中选择性点击反应高效制备大环二嵌段共聚物
影响因子：
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作者：
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通讯作者：
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