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Multilevel molecular weaving

delete2026-09-24
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DOI:10.1038/s41563-026-02754-9delete
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摘要

摘要

En 中文
分子编织的出现为材料性质的拓扑控制提供了一种自下而上的策略。然而,当前的分子编织聚合物网络在本质上受限于其单级编织结构,仅包含一种编织拓扑。这里我们提出了一种二维、多级编织聚合物网络,该网络整合了多种编织拓扑,类似于宏观复杂织物的结构。单晶X射线分析和整合的低剂量及低温电子显微镜成像证实了多级编织结构的存在。原位压力依赖拉曼光谱与理论计算相结合,揭示了多级编织聚合物网络中存在一种与单级对应物不同的分级应力调控机制。模拟工业分离过程的突破性实验进一步表明,多级编织拓扑产生的协同通道为精确的甲苯/甲基环己烷分离提供了独特的优势。因此,从单级到多级编织拓扑的转变不仅是一种结构升级,还引入了单级系统无法实现的单独特性和功能。分子编织为材料性质的拓扑控制提供了一种自下而上的策略。在这里,通过调节单体尺寸和溶剂模板,将多种编织拓扑整合到单一的二维聚合物网络中。

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Nature Materials
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massachusetts institute of technology
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Westlake University
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Zhejiang University of Technology
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zhejiang university
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