A Three‐Armed Polymer with Tunable Self‐Assembly and Self‐Healing Properties Based on Benzene‐1, 3, 5‐tricarboxamide and Metal–Ligand Interactions. Issue 17 (12th March 2019)

• Record Type: Journal Article
• Authors: Li, Chunmei; Tan, Jiaojun; Guan, Zhibin; Zhang, Qiuyu
• Other Names: Huang Wei guestEditor.; Zhang Qiuyu guestEditor.; Tian Wei guestEditor.
• Is Part Of: Macromolecular rapid communications. Volume 40:Issue 17(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-03-12
• Subjects: benzene‐1, 3, 5‐tricarboxamide -- metal‐ligand -- self‐assembly -- self‐healing; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201800909
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: The dynamic nature of supramolecules makes them useful in the fields of smart devices. The combination of multiple dynamic interactions in one material may bring some enhanced properties in mechanical property, self‐healing property, or recyclability. Thus, it is significantly meaningful to design new materials with multi‐dynamic bonds and clarify their bonding mechanisms. Here, a novel three‐armed polymer based on benzene‐1, 3, 5‐tricarboxamide (BTA) is developed and the polymer could be further complexed by metal ions to form dynamic zinc–imidazole interactions. In this system, BTA is located in the center, and the ligand‐functionalized monomer is copolymerized with n ‐butyl acrylate to form three chains. This is the first time BTA is introduced to a self‐healing system to endow the polymer with assembly and self‐healing properties. The composition, chemical structure, assembly behavior, mechanical properties, and self‐healing properties of the polymer are investigated. It is revealed that the assembly behavior of the polymer depends on the BTA contents and time. The mechanical property can be easily tuned by ligand/metal ratio and is significantly adjusted by the polymer chain length and environment humidity. Long polymer chains not only contribute to good mechanical property but also promote the self‐healing process due to the effective physical entanglement. Abstract : A three‐armed polymer containing BTA (benzene‐1, 3, 5‐tricarboxamide) and imidazole is synthesized and developed to a dual‐dynamic bonding system based on threefold H‐bonding and metal‐ligand interaction with self‐assembly and self‐healing properties. The self‐assembly depends on the BTA content, and the mechanical properties can be adjusted by the chain length and L/M (ligand/metal) ratio. Healing behavior can finish in 2 h at room temperature.