Polymer Zwitterions with Phosphonium Cations
Polymer Zwitterions with Phosphonium Cations
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DOI：
10.1021/jacs.1c00793
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发表时间：
2021-04-22
影响因子：
15
通讯作者：
Emrick, Todd
中科院分区：
文献类型：
--
作者：
Brown, Marcel U.;Triozzi, Alexandria;Emrick, Todd
聚合物两性离子具有广泛的用途，其中许多用途源于其用作亲水性涂料时的防污性能。然而，聚合物两性离子的化学组成仍然有限，合成变体最典型的是铵离子。本文介绍了通过取代丙酮与脂肪族和芳香族膦的开环反应合成新型的含膦的两性离子单体，并用可控的自由基法进行聚合。有趣的是，合成的聚合物膦磺酸盐可溶于多种有机溶剂，与更典型的亲水性聚合物两性离子的溶液性质不同，通过选择膦R基团可以实现可调和可切换的性质。由这些定制的磷磺酸盐两性离子制备的嵌段共聚物突出了它们的不同范围的溶解性和对水性聚合物组装的适应性。
Polymer zwitterions are of interest for numerous applications, many of which stem from their antifouling properties when used as hydrophilic coatings. However, the chemical compositions of polymer zwitterions remain limited, with synthetic variants most typically comprising ammonium cations. This manuscript describes the synthesis of novel phosphonium-based zwitterionic monomers, accessed by ring opening of substituted propane sultones with aliphatic and aromatic phosphines, and their polymerization by controlled free radical methods. Interestingly, the resultant polymeric phosphonium sulfonates proved soluble in numerous organic solvents, distinguishing them from the solution properties of more typical hydrophilic polymer zwitterions, with tunable and switchable properties made possible by selection of phosphonium R groups. Block copolymers prepared from these tailored phosphonium sulfonate zwitterions highlight their diverse range of solubility and amenability to aqueous polymer assembly.