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Self-assembly of amphiphilic alternating copolymers with stimuli-responsive rigid pendant groups
Polymer Chemistry ( IF 4.6 ) Pub Date : 2020-07-02 , DOI: 10.1039/d0py00765j
Yisheng Lv 1, 2, 3, 4, 5 , Liquan Wang 1, 2, 3, 4, 5 , Fan Liu 1, 2, 3, 4, 5 , Weisheng Feng 1, 2, 3, 4, 5 , Jie Wei 1, 2, 3, 4, 5 , Shaoliang Lin 1, 2, 3, 4, 5
Affiliation  

Amphiphilic alternating copolymers (AACs) possess unique self-assembly behaviours owing to their unique regular architecture. In this work, we employed dissipative particle dynamics simulations to explore the self-assembly behaviours of AACs with rigid pendants in selective solvents. The effects of block lengths and copolymer concentrations on the morphology of aggregates were examined. Two morphology diagrams were mapped out to provide a comprehensive understanding of the effect of these factors. The self-assembly process and the structure of aggregates were analysed in detail. The result shows that the amphiphilic alternating architecture can dramatically disturb the tendency of the ordered arrangement of rigid blocks. Furthermore, a rod-to-coil conformation transition of rigid blocks was performed to investigate the stimuli-responsive self-assembly behaviours. A comparison between the simulation results and our previous experimental observations was made, and the agreement is achieved.

中文翻译:

具有刺激响应性刚性侧基的两亲交替共聚物的自组装

两亲性交替共聚物(AAC)由于其独特的规则结构而具有独特的自组装行为。在这项工作中,我们采用耗散粒子动力学模拟来探索具有刚性侧基的AAC在选择性溶剂中的自组装行为。检查了嵌段长度和共聚物浓度对聚集体形态的影响。绘制了两个形态图,以全面了解这些因素的影响。详细分析了自组装过程和骨料的结构。结果表明,两亲交替结构可以极大地干扰刚性块有序排列的趋势。此外,进行了刚性块的棒到线圈构象转变,以研究刺激响应的自组装行为。仿真结果与我们先前的实验观察结果进行了比较,并达成了共识。
更新日期:2020-07-28
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