Facile one-pot synthesis and self-healing properties of tetrazole-based metallopolymers in the presence of iron salts

Abstract

As promising intelligent materials, self-healing materials have the capability of healing or repairing inflicted damage. Simply, inexpensive and commercial synthetic process is one of the hard issues. By using a facile one-pot two-step methodology, polyacrylonitrile-r-poly(butyl acrylate) (PAN-r-PnBA) was successfully prepared and modified to Fe 3+ /tetrazole-based metallopolymers (MPs) with significant self-healing properties. FeCl 3 $6H 2 O was used as a catalyst to modify cyano groups with sodium azide (NaN 3 ) and generate tetrazole group for coordinating with FeCl 3 $6H 2 O itself. The results indicated that the prepared MPs without any stimulus, can rapidly and autonomously heal inflicted damageat ambient temperature.These self-healing materials which were rapidly prepared with commercial and inexpensive substrates could facilitate the potential for application in a wide range.

Two‐dimensional β‐ketoenamine linked azo covalent organic frameworks as heterogeneous catalysts for photo‐induced RCMP

“…The polymerization results suggested that a several of functional methacrylate monomers were successfully initiated to produce polymers with controllable molecular weight ( M n ) and narrow molecular weight distribution ( Ð ) under visible light irradiation. Recently, different types of highly active RCMP photocatalyst systems, such as organic amines, 20,21 organic salts, 22,23 pyridine‐N‐oxides, 24,25 and special solvents, 17,26 were developed to mediate RCMP. Homogeneous catalysts present challenges in terms of separation and reprocessing at the end of the reaction, requiring costly and time‐consuming purification.…”