Pentablock Copolymer from Tetracomponent Monomer Mixture Using a Switchable Dizinc Catalyst
Pentablock Copolymer from Tetracomponent Monomer Mixture Using a Switchable Dizinc Catalyst
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DOI：
10.1021/acs.macromol.8b01224
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发表时间：
2018-07-24
期刊：
影响因子：
5.5
通讯作者：
Williams, Charlotte K.
中科院分区：
文献类型：
--
作者：
Chen, Thomas T. D.;Zhu, Yunqing;Williams, Charlotte K.
使用单一催化剂，在一锅中，由四种不同的单体：酸酐、环氧化物、内酯和C02制备定义明确的五嵌段共聚物。双锌催化剂桥接三个不同的聚合循环，并在聚合机理中进行双重转换以产生五嵌段共聚物。新材料是羟基遥爪，并有效地后官能化引入极性和非极性侧链。
Well-defined pentablock copolymers are prepared using a single catalyst, in one pot, from four different monomers: anhydride, epoxide, lactone, and CO,. The dizinc catalyst bridges three distinct polymerization cycles and performs a double switch in polymerization mechanism to produce pentablock copolymers. The new materials are hydroxyl-telechelic and are efficiently postfunctionalized to introduce polar and nonpolar side-chains.