Multidimensional hierarchical self-assembly of amphiphilic cylindrical block comicelles
Multidimensional hierarchical self-assembly of amphiphilic cylindrical block comicelles
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DOI：
10.1126/science.1261816
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发表时间：
2015-03-20
期刊：
影响因子：
56.9
通讯作者：
Manners, Ian
中科院分区：
文献类型：
--
作者：
Qiu, Huibin;Hudson, Zachary M.;Manners, Ian
分子和嵌段共聚物两亲物的自组装代表了具有各种形状和凝胶状相的胶束的成熟途径。我们证明了一个类似的过程，但在一个较长的长度尺度，其中两亲性的P-H-P和H-P-H圆柱形三嵌段胶束与疏水（H）或极性（P）的长度是单分散的片段能够自组装并排或端对端的中心或末端段，分别在非溶剂中。这允许形成圆柱形超胶束和一维（1D）或3D超结构，其在溶液和固态中都存在。这些组件具有多个层次的结构层次，并在多微米长度尺度上存在，这些特征通常只存在于天然材料中。
Self-assembly of molecular and block copolymer amphiphiles represents a well-established route to micelles with a wide variety of shapes and gel-like phases. We demonstrate an analogous process, but on a longer length scale, in which amphiphilic P-H-P and H-P-H cylindrical triblock comicelles with hydrophobic (H) or polar (P) segments that are monodisperse in length are able to self-assemble side by side or end to end in nonsolvents for the central or terminal segments, respectively. This allows the formation of cylindrical supermicelles and one-dimensional (1D) or 3D superstructures that persist in both solution and the solid state. These assemblies possess multiple levels of structural hierarchy in combination with existence on a multimicrometer-length scale, features that are generally only found in natural materials.