Facile Screening of Various Micellar Morphologies by Blending Miktoarm Stars and Diblock Copolymers.
Facile Screening of Various Micellar Morphologies by Blending Miktoarm Stars and Diblock Copolymers.
复制标题
DOI：
10.1021/acsmacrolett.7b00328
复制
发表时间：
2017-06
影响因子：
5.8
通讯作者：
A. Steinschulte;A. Gelissen;A. Jung;M. Brugnoni;T. Caumanns;G. Lotze;J. Mayer;D. Pergushov;F. Plamper
中科院分区：
文献类型：
--
作者：
A. Steinschulte;A. Gelissen;A. Jung;M. Brugnoni;T. Caumanns;G. Lotze;J. Mayer;D. Pergushov;F. Plamper
介绍了一种节省时间的相图筛选方法，用于不溶部分具有不同臂数的杂臂星星聚合物的自组装。与理论相一致，所有常规胶束形态（球形星形胶束、圆柱形胶束和囊泡）都可以通过调节混合杂臂星形与二嵌段共聚物（在恒定臂/嵌段长度下）时的平均臂数来获得。此外，检测到罕见的聚集囊泡相。因此，这种方法允许容易地调整的平衡形态和疏溶剂域的大小。通过散射、超离心和电子显微镜技术进行的这种筛选有助于具有明确臂数的杂臂星的靶向合成，目的是在不混合的情况下控制纳米结构的形态。具体而言，我们证明了一个系统的变化，所有经典的胶束形态的基础上intermittent复合物（IPECs），由一个水不溶性的部分形成的静电耦合聚（苯乙烯磺酸）链/季铵化聚（2-（二甲基氨基）乙基甲基丙烯酸酯）块，被稳定的亲水性聚（环氧乙烷）块。
A time-saving phase-diagram screening is introduced for the self-assembly of miktoarm star polymers with different arm numbers for the insoluble part. Agreeing with theory, all conventional micellar morphologies (spherical star-like micelles, cylindrical micelles and vesicles) can be accessed by adjusting the average arm number when blending miktoarm stars with diblock copolymers (at constant arm/block lengths). Additionally, a rare clustered vesicle phase is detected. Hence, this approach permits an easy tuning of the equilibrium morphology and the size of the solvophobic domain. Such screening by scattering, ultracentrifugation, and electron microscopy techniques assists the targeted synthesis of miktoarm stars with a well-defined arm number, aimed at the morphology control of the nanostructures without blending. Specifically, we demonstrate a systematic variation of all classical micellar morphologies based on interpolyelectrolyte complexes (IPECs), consisting of a water-insoluble part formed by electrostatically coupled poly(styrenesulfonate) chains/quaternized poly(2-(dimethylamino)ethyl methacrylate) blocks, being stabilized by hydrophilic poly(ethylene oxide) blocks.