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The synthesis, properties and potential applications of cyclic polymers.
Nature Chemistry ( IF 19.2 ) Pub Date : 2020-04-06 , DOI: 10.1038/s41557-020-0440-5 Farihah M Haque 1 , Scott M Grayson 1
Nature Chemistry ( IF 19.2 ) Pub Date : 2020-04-06 , DOI: 10.1038/s41557-020-0440-5 Farihah M Haque 1 , Scott M Grayson 1
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Unlike their more common linear counterparts, cyclic polymers have a ring-like structure and a lack of chain ends. Because of their topology, cyclic polymers exhibit a unique set of properties when compared with linear or branched macromolecules. For example, cyclic homopolymers exhibit a reduced hydrodynamic volume and a slower degradation profile compared with their linear analogues. Cyclic block copolymers self-assemble into compact nanostructures, as illustrated by their reduced domain spacing when cast into thin films and their reduced micellar size in solution. Although methods for preparing well-defined cyclic polymers have only been available since 1980, the extensive utilization of the cyclic topology in nature highlights the vital role that a cyclic architecture can play in imparting valuable physical properties, such as increased chemical stability or propensity towards self-assembly. This Review describes the major developments in the synthesis of cyclic polymers and provides an overview of their fundamental physical properties. In this context, preliminary studies exploring potential applications will be critically assessed and the remaining challenges for the field delineated.
中文翻译：
环状聚合物的合成，性质和潜在应用。
与它们更常见的线性对应物不同，环状聚合物具有环状结构且缺乏链端。由于其拓扑结构，与线性或支链大分子相比，环状聚合物表现出独特的性能。例如，环状均聚物与其线性类似物相比，显示出减小的流体力学体积和较慢的降解曲线。环状嵌段共聚物可自组装成紧密的纳米结构，如浇铸成薄膜时减小的畴间距和减小的溶液中胶束尺寸所示。尽管自1980年以来才可以使用制备定义明确的环状聚合物的方法，但是自然界中环状拓扑的广泛利用凸显了环状结构在赋予有价值的物理性质方面可以发挥的至关重要的作用，例如增加的化学稳定性或自组装倾向。这篇综述描述了环状聚合物合成的主要进展，并概述了其基本物理性质。在这种情况下，将严格评估探索潜在应用的初步研究，并描述该领域的剩余挑战。
更新日期：2020-04-24
中文翻译：
环状聚合物的合成，性质和潜在应用。
与它们更常见的线性对应物不同，环状聚合物具有环状结构且缺乏链端。由于其拓扑结构，与线性或支链大分子相比，环状聚合物表现出独特的性能。例如，环状均聚物与其线性类似物相比，显示出减小的流体力学体积和较慢的降解曲线。环状嵌段共聚物可自组装成紧密的纳米结构，如浇铸成薄膜时减小的畴间距和减小的溶液中胶束尺寸所示。尽管自1980年以来才可以使用制备定义明确的环状聚合物的方法，但是自然界中环状拓扑的广泛利用凸显了环状结构在赋予有价值的物理性质方面可以发挥的至关重要的作用，例如增加的化学稳定性或自组装倾向。这篇综述描述了环状聚合物合成的主要进展，并概述了其基本物理性质。在这种情况下，将严格评估探索潜在应用的初步研究，并描述该领域的剩余挑战。
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