Self‐Healing and Shape Memory Hypercrosslinked Metal‐Organic Polyhedra Polymers via Coordination Post‐Assembly

• Published in: Angewandte Chemie International Edition Vol. 61; no. 43; pp. e202212253 - n/a
• Main Authors: Liu, Jinjin, Li, Jiamin, Qiao, Shan, Wang, Zhifang, Zhang, Penghui, Fan, Xiangqian, Cheng, Peng, Li, Yue‐Sheng, Chen, Yao, Zhang, Zhenjie
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 24.10.2022
• Edition: International ed. in English
• Subjects: Coordination; Corrosion prevention; Couplings; Crosslinking; Dynamic characteristics; Healing; Hypercrosslink Membrane; Mechanical properties; Metal-Organic Polyhedra; Multifunctional materials; Polyhedra; Polymers; Post-Assembly; Self-Healing; Shape Memory; Three dimensional printing
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.202212253

Coordination‐driven crosslinking networks with reversible and dynamic characteristics are gaining increasing interest in diverse application fields. Herein, we use a coordination crosslinking approach using metal‐organic polyhedra (MOPs) as high‐connectivity building blocks to post‐assemble a class of coordination hypercrosslinked MOP (CHMOP) polymers. The introduction of 12‐connected MOP nodes to the polymeric networks is critical to producing membranes that overcome the trade‐off between mechanical properties and dynamic healing, and meanwhile possess multifunctionalities including shape memory, solution processability, and 3D printing. The CHMOPs can also be used for anticorrosion coating and achieve function couplings, e.g., shape memory‐assisted self‐healing (SMASH), which have not been achieved in the MOP‐based hybrid materials yet. This work not only offers a feasible strategy to construct new multifunctional materials but also greatly expands the application scopes of MOPs. A type of coordination hypercrosslinked MOP (CHMOP) polymers was prepared using soluble and well‐defined MOPs as high‐connectivity building blocks. The introduction of MOPs constructs a coordination dynamic network that not only enhances mechanical properties but also realizes multifunctionality including self‐healing, shape memory, solution processability, and 3D printing. CHMOPs provide a novel platform for expansion of the smart soft materials.