Toughening a Self‐Healable Supramolecular Polymer by Ionic Cluster‐Enhanced Iron‐Carboxylate Complexes,Angewandte Chemie International Edition

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Toughening a Self‐Healable Supramolecular Polymer by Ionic Cluster‐Enhanced Iron‐Carboxylate Complexes
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-02-25 , DOI: 10.1002/anie.201913893
Yuanxin Deng ₁ , Qi Zhang ₁ , Ben L. Feringa _{1,

2} , He Tian ₁ , Da‐Hui Qu ₁

Affiliation

Supramolecular polymers that can heal themselves automatically usually exhibit weakness in mechanical toughness and stretchability. Here we exploit a toughening strategy for a dynamic dry supramolecular network by introducing ionic cluster‐enhanced iron‐carboxylate complexes. The resulting dry supramolecular network simultaneous exhibits tough mechanical strength, high stretchability, self‐healing ability, and processability at room temperature. The excellent performance of these distinct supramolecular polymers is attributed to the hierarchical existence of four types of dynamic combinations in the high‐density dry network, including dynamic covalent disulfide bonds, noncovalent H‐bonds, iron‐carboxylate complexes and ionic clustering interactions. The extremely facile preparation method of this self‐healing polymer offers prospects for high‐performance low‐cost material among others for coatings and wearable devices.

中文翻译：

通过离子簇增强的铁-羧酸盐配合物增韧可自我修复的超分子聚合物

能自我修复的超分子聚合物通常表现出机械韧性和可拉伸性方面的弱点。在这里，我们通过引入离子簇增强的羧酸铁络合物，为动态干超分子网络开发了增韧策略。所得的干超分子网络同时具有坚韧的机械强度，高拉伸性，自修复能力和在室温下的可加工性。这些独特的超分子聚合物的出色性能归因于高密度干网络中四种动态组合的分层存在，包括动态共价二硫键，非共价H键，羧酸铁络合物和离子簇相互作用。

更新日期：2020-02-25

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