Multihydroxy Polyamines by Living Anionic Polymerization of Aziridines.
Multihydroxy Polyamines by Living Anionic Polymerization of Aziridines.
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DOI：
10.1021/acsmacrolett.5b00901
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发表时间：
2016-01
影响因子：
5.8
通讯作者：
E. Rieger;A. Manhart;F. Wurm
中科院分区：
文献类型：
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作者：
E. Rieger;A. Manhart;F. Wurm
通过活性阴离子聚合制备了缩醛保护和磺酰胺活化的氮杂环丙烷（Az），其分子量分散度在大多数情况下低于1.2，并且分子量可控。已经制备了三种新的单体，它们的侧链长度不同。所得双保护的聚合物可以选择性地脱保护以释放多胺或多元醇结构。对所有聚合物进行了详细的结构表征，扩链证明了它们的活性聚合行为和嵌段共聚物的形成。可以使用热分析以遵循脱保护步骤。这些新的受保护的单体拓宽了氮杂环丙烷的氮杂阴离子聚合的范围，并且可以作为定义明确的功能性聚（乙烯亚胺）衍生物找到有用的应用。
Acetal-protected and sulfonamide-activated aziridines (Az) have been prepared and polymerized by living anionic polymerization with molecular weight dispersities in most cases below Đ < 1.2 and controlled molecular weights. Three new monomers have been prepared varying in the length of the pendant chain. The resulting double protected polymers can be selectively deprotected in order to release the polyamine or the polyol structures. Detailed structural characterization was performed for all polymers, and chain extension proves their living polymerization behavior and the formation of block copolymers. Thermal analysis can be used in order to follow the deprotection steps. These new protected monomers broaden the scope of the azaanionic polymerization of aziridines and may find useful applications as well-defined functional poly(ethylene imine) derivatives.