Solid-state supramolecular polymers: a new era for polymer science

我合成了一种新型的超分子单体，它含有一个羧酸基、一个胍基和两个热力学不相容的侧链。羧酸基和胍基具有很强的超分子相互作用，称为盐桥。这些单体通过盐桥相互作用进行超分子聚合。此外，由于两个侧链的微相分离，超分子聚合物在固体状态下形成了分级结构。通过小角X射线散射和透射电子显微镜证实了纳米级分级结构的形成。这一结果表明，超分子聚合可以促进小分子高分子链的微相分离，进而形成纳米结构。

I synthesized a novel type of supramolecular monomer, which contains a carboxylate group, a guanidinium group, and two thermodynamic incompatible side chains. The carboxylate group and the guanidinium group have a strong supramolecular interaction called salt-bridge. The monomers are supramolecular polymerized via salt-bridge interaction. Furthermore, supramolecular polymers form a hierarchical structure in the solid state due to the microphase separation of two side chains. I confirmed the formation of nanoscale hierarchical structures by small angle X-ray scattering and transmission electron microscope. This result demonstrates that supramolecular polymerization can facilitate the microphase separation of polymer chains with small molecular weights and further form nanoscale structures.