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Atom-transfer radical homo- and copolymerization of carbazole-substituted styrene and perfluorostyrene
European Polymer Journal ( IF 6 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.eurpolymj.2020.109843
Aliaksei A. Vaitusionak , Irina V. Vasilenko , Galyna Sych , Anna V. Kashina , Jurate Simokaitiene , Juozas V. Grazulevicius , Sergei V. Kostjuk

Abstract Atom-transfer radical polymerization of 9-(4-vinylphenyl)carbazole (M1) and 9-(2,3,5,6-tetrafluoro-4-vinylphenyl)carbazole (M2) has been investigated using CuCl/N,N,N′,N′′,N′′-pentamethyldiethylenetriamine as catalyst and ethyl 2-bromoisobutyrate as an initiator. The polymerization of the monomers proceeded in a living fashion affording polymers with controlled molecular weight (Mn = 5000 g mol−1 to 32000 g mol−1) and relatively low polydispersity (Đ = 1.2–1.5). The kinetic investigations showed that M2 polymerized at the faster rate as compared to M1. Block copolymers were successfully prepared starting from the polymerization of more reactive M2 followed by addition of M1. The same initiating system also induced living radical copolymerization of these monomers giving random copolymers. Usage of tetrafunctional initiator pentaerythritol tetrakis(2-bromoisobutyrate) in conjunction with CuCl/N,N,N′,N′′,N′′-pentamethyldiethylenetriamine as catalyst allowed to synthesize star-shaped linear and random copolymers from M1 and M2 with controlled molecular weight (up to Mn = 25000 g mol−1) and low polydispersity (Đ

中文翻译:

咔唑取代苯乙烯和全氟苯乙烯的原子转移自由基均聚和共聚

摘要 使用 CuCl/N,N 研究了 9-(4-乙烯基苯基)咔唑 (M1) 和 9-(2,3,5,6-四氟-4-乙烯基苯基)咔唑 (M2) 的原子转移自由基聚合, N',N'',N''-五甲基二亚乙基三胺为催化剂,2-溴异丁酸乙酯为引发剂。单体的聚合以活性方式进行,聚合物具有可控的分子量(Mn = 5000 g mol-1 至 32000 g mol-1)和相对较低的多分散性(Đ = 1.2-1.5)。动力学研究表明,与 M1 相比,M2 以更快的速率聚合。从反应性更强的 M2 的聚合开始,然后加入 M1,成功地制备了嵌段共聚物。相同的引发体系也诱导这些单体的活性自由基共聚,产生无规共聚物。
更新日期:2020-07-01
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