Atom transfer radical polymerization using multidentate amine ligands supported on soluble hyperbranched polyglycidol
Atom transfer radical polymerization using multidentate amine ligands supported on soluble hyperbranched polyglycidol
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DOI：
10.1002/macp.200300098
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发表时间：
2004-03-25
影响因子：
2.5
通讯作者：
Brooks, DE
中科院分区：
文献类型：
--
作者：
Kumar, KR;Kizhakkedathu, JN;Brooks, DE
使用超支化聚缩水甘油负载的多齿胺配体/(CuBr)-Br-I催化剂体系，通过原子转移自由基聚合(ATRP)实现苯乙烯在甲苯中的受控聚合。这些具有纳米级尺寸的催化剂体系比相应的低分子量配体更具活性。线性一阶图（ln[M](o)/[M] 相对于时间）和 (M) 相对于 bar (n) 相对于转化率的线性增加以及低多分散性支持了聚合的受控/活性性质。甲基丙烯酸甲酯在乙腈中的类似受控聚合是可能的。通过简单的甲醇沉淀和过滤，可以从聚合物中除去高达 97% 的用于聚合的总铜。
Controlled polymerization of styrene in toluene was achieved by atom transfer radical polymerization (ATRP) using hyperbranched polyglycidol-supported multidentate amine ligands/(CuBr)-Br-I catalyst systems. These catalyst systems with nanoscopic dimensions were more active than the corresponding low-molecular-weight ligands. The controlled/living nature of the polymerization is supported by linear first order plots (ln[M](o)/[M] versus time) and a linear increase of (M) over bar (n) versus conversion as well as low polydispersity. Similar controlled polymerization of methyl methacrylate was possible in acetonitrile. Up to 97% of total copper used for polymerization could be removed from the polymer by simple precipitation in methanol and filtration.