One-Shot Synthesis and Melt Self-Assembly of Bottlebrush Copolymers with a Gradient Compositional Profile
One-Shot Synthesis and Melt Self-Assembly of Bottlebrush Copolymers with a Gradient Compositional Profile
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DOI：
10.1021/acsmacrolett.8b00273
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发表时间：
2018-06-01
影响因子：
7.015
通讯作者：
Rzayev, Javid
中科院分区：
文献类型：
--
作者：
Jiang, Liuyin;Nykypanchuk, Dmytro;Rzayev, Javid
形态控制在软材料设计中起着核心作用。在这里，我们报告的梯度bottlebrush架构的合成和它的作用，指导分子包装在固态。采用一步法开环易位聚合法合成了具有梯度界面的瓶刷状共聚物。动力学研究表明，梯度组成分布分离的两个块沿着骨干。侧链对称梯度瓶刷共聚物表现出强烈的倾向，组装成圆柱形的微结构，在对比与尖锐的接口，他们的嵌段共聚物类似物。这种界面组成的精细结构控制提供了一个精细的处理来指导大分子组装。
Morphological control plays a central role in soft materials design. Herein, we report the synthesis of a gradient bottlebrush architecture and its role in directing molecular packing in the solid state. Bottlebrush copolymers with gradient interfaces were prepared via one-shot ring-opening metathesis polymerization of exo- and endo-norbornene-capped macromonomers. Kinetic studies revealed a gradient compositional profile separating the two blocks along the backbone. Side-chain symmetric gradient bottlebrush copolymers exhibited a strong tendency to assemble into cylindrical microstructures, in contrast to their block copolymer analogs with sharp interfaces. Such exquisite architectural control of the interfacial composition affords a delicate handle to direct macromolecular assembly.