General and Facile Approach to Exact Graft Copolymers by Iterative Methodology Using Living Anionic In-Chain-Functionalized AB Diblock Copolymers as Key Building Blocks
General and Facile Approach to Exact Graft Copolymers by Iterative Methodology Using Living Anionic In-Chain-Functionalized AB Diblock Copolymers as Key Building Blocks
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DOI：
10.1021/ma200186p
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发表时间：
2011-04
期刊：
影响因子：
5.5
通讯作者：
A. Hirao;Kota Murao;A. Abouelmagd;Masahiro Uematsu;Shotaro Ito;Raita Goseki;Takashi Ishizone
中科院分区：
文献类型：
--
作者：
A. Hirao;Kota Murao;A. Abouelmagd;Masahiro Uematsu;Shotaro Ito;Raita Goseki;Takashi Ishizone
利用活性链内（3-叔丁基二甲基硅氧基甲基苯基）（SiOMP）功能化AB二嵌段共聚物作为关键结构单元，通过逐步迭代法成功合成了聚甲基丙烯酸叔丁酯-聚苯乙烯（PS）、聚甲基丙烯酸二茂铁甲酯-聚苯乙烯（PS）和聚2-乙烯基吡啶-聚苯乙烯（PS）等多种精确接枝共聚物。该方法在每个迭代过程中基本上涉及三个反应步骤，即，(1)活性阴离子嵌段共聚以制备活性链内SiOMP官能化AB二嵌段共聚物，（2）SiOMP基团转化为丙烯酸α-苯基酯（PA）官能团的转化反应，和（3）所得链内PA官能化AB二嵌段共聚物与单独制备以连接两个嵌段共聚物链的活性链内SiOMP官能化AB二嵌段共聚物的1：1加成反应。通过执行相同的迭代过程，包括步骤...
A variety of exact graft copolymers, such as poly(tert-butyl methacrylate)-exact graft-polystyrene (PS), poly(ferrocenylmethyl methacrylate)-exact graft-PS, and poly(2-vinylpyridine)-exact graft-PS, have been successfully synthesized by developing a novel stepwise iterative methodology based on a new concept utilizing living in-chain-(3-tert-butyldimethylsilyloxymethylphenyl) (SiOMP)-functionalized AB diblock copolymers as key building blocks. The methodology basically involves three reaction steps in each iterative process, i.e., (1) living anionic block copolymerization to prepare a living in-chain-SiOMP-functionalized AB diblock copolymer, (2) a transformation reaction of the SiOMP group into an α-phenyl acrylate (PA) function, and (3) a 1:1-addition reaction of the resulting in-chain-PA-functionalized AB diblock copolymer with a living in-chain-SiOMP-functionalized AB diblock copolymer separately prepared to link the two block copolymer chains. By performing the same iterative process involving steps ...