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<p>Developing new generic methodologies for organizing molecules into nano- to mesoscale structures of precise shapes and sizes is a research topic at the forefront of modern chemistry. Creating hierarchical molecular assembly, especially at the mesoscale, is important to realize functions reminiscent of those manifested by biomolecular assemblies in the mesoscopic regime. However, this is challenging due to the difficulty in maintaining stringent controllability over the organization of molecules at higher hierarchical levels, wherein weak non-directional intermolecular interactions rather than strong directional interactions typically play a predominant role. Recent studies have revealed that secondary nucleation, often experienced by one-dimensional assemblies such as supramolecular polymers that grow with spontaneous nucleation, is effective in the hierarchical construction of higher-order structures. Here we illustrate how secondary nucleation can be combined with the well-established precision synthesis of supramolecular polymers to realize precise control over hierarchical structures in the mesoscopic regime. We present a roadmap for creating hierarchical supramolecular polymers by exploiting secondary nucleation–elongation processes and discuss future prospects for the field.</p><p></p>

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Secondary nucleation as a strategy towards hierarchically organized mesoscale topologies in supramolecular polymerization

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Sougata Datta,
  • Hiroki Itabashi,
  • Takuho Saito,
  • Shiki Yagai

摘要

Developing new generic methodologies for organizing molecules into nano- to mesoscale structures of precise shapes and sizes is a research topic at the forefront of modern chemistry. Creating hierarchical molecular assembly, especially at the mesoscale, is important to realize functions reminiscent of those manifested by biomolecular assemblies in the mesoscopic regime. However, this is challenging due to the difficulty in maintaining stringent controllability over the organization of molecules at higher hierarchical levels, wherein weak non-directional intermolecular interactions rather than strong directional interactions typically play a predominant role. Recent studies have revealed that secondary nucleation, often experienced by one-dimensional assemblies such as supramolecular polymers that grow with spontaneous nucleation, is effective in the hierarchical construction of higher-order structures. Here we illustrate how secondary nucleation can be combined with the well-established precision synthesis of supramolecular polymers to realize precise control over hierarchical structures in the mesoscopic regime. We present a roadmap for creating hierarchical supramolecular polymers by exploiting secondary nucleation–elongation processes and discuss future prospects for the field.