Versatility of radical coupling in construction of topological polymers
Versatility of radical coupling in construction of topological polymers
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DOI：
10.1039/c3py00872j
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发表时间：
2014
影响因子：
4.6
通讯作者：
Guowei Wang;Junlian Huang
中科院分区：
文献类型：
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作者：
Guowei Wang;Junlian Huang
各种聚合机理的发展为构造具有复杂结构的明确聚合物铺平了道路。然而，单一的聚合机理或几种机理的简单组合往往不能满足要求。因此，一些有效的偶联反应将在高分子科学中发挥重要作用。本文综述了自由基偶联在拓扑聚合物结构中的应用。原子转移自由基偶联（ATRC）反应和试剂（如苯乙烯、硝酮或二烯）辅助的自由基偶联均以均偶联方式进行，得到结构对称的聚合物。氮氧自由基偶联（NRC）作为一种更通用的方法也进行了讨论，它以杂偶联方式进行，可以设计出具有各种不对称结构的聚合物。最后对自由基偶联反应在高分子科学中的应用前景进行了展望。
The development of various polymerization mechanisms has paved the way for the construction of well-defined polymers with complicated structures. However, a single polymerization mechanism or a simple combination of several mechanisms often cannot meet the requirements. Thus, some efficient coupling reactions would play an important role in polymer science. In this review, we focused on the application of radical coupling in the construction of topological polymers. The atom transfer radical coupling (ATRC) reaction and agent (such as styrene, nitrone or diene) assisted radical coupling proceeded in a homocoupling style and polymers with symmetrical structures were obtained. As a more versatile method, nitroxide radical coupling (NRC) was also discussed, which proceeded in a heterocoupling style and polymers with various asymmetrical structures could be designed. Finally, the prospects of radical based coupling reactions in polymer science were also suggested.