Self-Assembly of Repetitive Segment and Random Segment Polymer Architectures,ACS Macro Letters

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Self-Assembly of Repetitive Segment and Random Segment Polymer Architectures
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-11-22 , DOI: 10.1021/acsmacrolett.2c00495
Hao Yu ₁ , Falon C Kalutantirige ₂ , Lehan Yao ₃ , Charles M Schroeder _{1,

2,

3,

4} , Qian Chen _{1,

2,

3,

4} , Jeffrey S Moore _{2,

3,

4}

Affiliation

Recent advances in chemical synthesis have created new methodologies for synthesizing sequence-controlled synthetic polymers, but rational design of monomer sequence for desired properties remains challenging. In this work, we synthesize periodic polymers with repetitive segments using a sequence-controlled ring-opening metathesis polymerization (ROMP) method, which draws inspiration from proteins containing repetitive sequence motifs. The repetitive segment architecture is shown to dramatically affect the self-assembly behavior of these materials. Our results show that polymers with identical repetitive sequences assemble into uniform spherical nanoparticles after thermal annealing, whereas copolymers with random placement of segments with different sequences exhibit disordered assemblies without a well-defined morphology. Overall, these results bring a new understanding to the role of periodic repetitive sequences in polymer assembly.

中文翻译：

重复链段和随机链段聚合物结构的自组装

化学合成的最新进展创造了合成序列控制合成聚合物的新方法，但合理设计单体序列以获得所需性能仍然具有挑战性。在这项工作中，我们使用序列控制的开环复分解聚合 (ROMP) 方法合成具有重复片段的周期性聚合物，该方法从包含重复序列基序的蛋白质中汲取灵感。重复的片段结构被证明会显着影响这些材料的自组装行为。我们的结果表明，具有相同重复序列的聚合物在热退火后组装成均匀的球形纳米粒子，而具有不同序列的段随机放置的共聚物表现出无序组装，没有明确的形态。全面的，

更新日期：2022-11-22

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