Foldamer is a scaled‐down version of coil spring, which can absorb and release energy by conformational change. Here, polymer networks with high‐density of molecular springs were developed by employing anion‐coordination‐based foldamers as the monomer. The coiling of the foldamer is controlled by oligourea ligands coordinating to chloride ions; subsequently, the folding and unfolding of foldamer conformations endow the polymer network with excellent energy dissipation and toughness. The mechanical performance of the corresponding polymer network shows a dramatic increase from P‐L2UCl (non‐folding), P‐L4UCl (a full turn) to P‐L6UCl (1.5 turns), in terms of strength (2.62 MPa; 14.26 Mpa; 22.93 Mpa), elongation at break (70%; 325%; 352%), Young’s modulus (2.69 MPa; 63.61 Mpa; 141.50 Mpa), and toughness (1.12 MJ/m3; 21.39 MJ/m3; 49.62 MJ/m3), respectively, which are also better than those without anion centers and the non‐foldamer based counterparts. Moreover, P‐L6UCl shows enhanced strength and toughness than most of the molecular‐spring based polymer networks.Moreover, P‐L6UCl shows enhanced strength and toughness than most of the molecular‐spring based polymer networks. Thus, an effective strategy for designing high‐performance anion‐coordination‐based materials is presented in this study.

中文翻译：

---

基于阴离子配位折叠体的聚合物网络：从分子弹簧到弹性体

Foldamer是螺旋弹簧的缩小版，可以通过构象变化吸收和释放能量。在这里，通过采用基于阴离子配位的折叠体作为单体开发了具有高密度分子弹簧的聚合物网络。折叠体的卷曲由与氯离子配位的低聚脲配体控制；随后，折叠体构象的折叠和展开赋予聚合物网络优异的能量耗散和韧性。相应聚合物网络的机械性能显示出从 P-L2UCl（非折叠）、P-L4UCl（一整圈）到 P-L6UCl（1.5 圈）的显着提高，强度方面（2.62 MPa；14.26 Mpa； 22.93 Mpa）、断裂伸长率（70%；325%；352%）、杨氏模量（2.69 MPa；63.61 Mpa；141.50 Mpa）和韧性（1.12 MJ/m3；21.39 MJ/m3；49.62 MJ/m3），分别比没有阴离子中心和基于非折叠体的对应物更好。此外，P-L6UCl 比大多数基于分子弹簧的聚合物网络显示出更高的强度和韧性。此外，P-L6UCl 比大多数基于分子弹簧的聚合物网络显示出更高的强度和韧性。因此，本研究提出了设计高性能阴离子配位材料的有效策略。