Zwitterionic Sulfonium Sulfonate Polymers: Impacts of Substituents and Inverted Dipole
Zwitterionic Sulfonium Sulfonate Polymers: Impacts of Substituents and Inverted Dipole
复制标题
两性离子磺酸锍聚合物：取代基和倒偶极子的影响
DOI：
10.1021/acs.macromol.2c02359
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发表时间：
2023
期刊：
影响因子：
5.5
通讯作者：
Emrick, Todd
中科院分区：
文献类型：
--
作者：
Brown, Marcel U.;Seong, Hong-Gyu;Russell, Thomas P.;Emrick, Todd
涉及聚合物两性离子的研究通常涉及铵基结构的制备及其作为涂层或凝胶的研究，这些涂层或凝胶赋予基底和材料亲水性和/或亲水性。最近的合成进展已经产生了显着的扩展，在聚合物的两性离子化学，特别是相对于打开新的可能性，检查聚合物两性离子作为两亲物，功能表面活性剂，和复杂的乳液的组分的阳离子部分的组合物。本文介绍了新型两性离子型磺酸盐单体的合成及其在可控自由基聚合中作为起始原料的应用。这些新颖的聚合物两性离子带有锍磺酸盐基团，其相对于现有实施例具有反向偶极方向性，这产生了不同的和意想不到的物理和化学性质。例如，本文所述的聚合物两性离子可溶于宽范围的非水溶剂中，并且相对于它们的偶极反转对应物，对亲核试剂具有显著更大的稳定性。此外，这些磺酸锍聚合物的两亲特性使它们适合用作稳定水包油乳液的表面活性剂，这是使用常规超亲水聚合物两性离子不可能实现的特征。
Research involving polymer zwitterions typically involves the preparation of ammonium-based structures and their study as coatings or gels that impart hydrophilicity and/or antifouling properties to substrates and materials. More recent synthetic advances have produced a significant expansion in polymer zwitterion chemistry, especially with respect to the composition of the cationic moieties that open new possibilities to examine polymer zwitterions as amphiphiles, functional surfactants, and components of complex emulsions. This article describes the synthesis of new zwitterionic sulfonium sulfonate monomers and their use as starting materials in controlled free radical polymerization to yield the corresponding polymers. These novel polymer zwitterions bear sulfonium sulfonate groups, that possess an inverted dipole directionality relative to prior examples that yields different and unexpected physical and chemical properties. For example, the polymer zwitterions described here are soluble in a wide range of nonaqueous solvents and possess significantly greater stability against nucleophiles relative to their dipole-inverted counterparts. Additionally, the amphiphilic character of these sulfonium sulfonate polymers makes them amenable to use as surfactants for stabilizing oil-in-water emulsions, a feature that is not possible using conventional ultrahydrophilic polymer zwitterions.
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
M. Caserio;J. Kim
通讯作者：
J. Kim
影响因子：
19
作者：
Santa Chalarca, Cristiam F.;Letteri, Rachel A.;Emrick, Todd
通讯作者：
Emrick, Todd
由 MDPB 和 MPC 组成的抗菌和抗蛋白质表面涂层
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
Thongthai P;Kitagawa H;Kitagawa R;Hirose N;Iwasaki Y;Imazato S
通讯作者：
Imazato S