Ultra-High-Molecular-Weight Macrocyclic Bottlebrushes via Post-Polymerization Modification of a Cyclic Polymer,Macromolecules

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Ultra-High-Molecular-Weight Macrocyclic Bottlebrushes via Post-Polymerization Modification of a Cyclic Polymer
Macromolecules ( IF 5.1 ) Pub Date : 2020-11-04 , DOI: 10.1021/acs.macromol.0c01797
Digvijayee Pal ₁ , Zhihui Miao _{1,

2} , John B. Garrison ₁ , Adam S. Veige _{1,

2} , Brent S. Sumerlin ₁

Affiliation

Polymer bottlebrushes are complex macromolecular nanostructures with polymeric side chains densely grafted to a polymer backbone. In this work, a synthetic strategy for the synthesis of cyclic bottlebrush polymers was exhibited by combining ring-expansion polymerization (REP) and atom transfer radical polymerization (ATRP) by a grafting-from approach. A variety of ultra-high-molecular-weight (on the order of MDa) macrocyclic bottlebrushes were generated by employing this method. Direct visualization of the macrocyclic bottlebrushes was achieved by atomic force microscopy. Furthermore, a linear bottlebrush polymer was synthesized independently by a similar synthetic route to investigate topological differences between cyclic and linear architectures.

中文翻译：

通过循环聚合物的聚合后改性的超高分子量大环型牙刷

聚合物刷是复杂的大分子纳米结构，具有紧密接枝到聚合物主链上的聚合物侧链。在这项工作中，通过接枝方法将扩环聚合（REP）和原子转移自由基聚合（ATRP）结合起来，展示了一种合成环状瓶刷聚合物的合成策略。通过使用这种方法，产生了各种超高分子量（按MDa顺序）的大环刷。大环刷的直接可视化是通过原子力显微镜实现的。此外，通过类似的合成路线独立合成了线性瓶刷聚合物，以研究环状和线性体系结构之间的拓扑差异。

更新日期：2020-11-25

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