Dynamic covalent cross-linked polymer gels through the reaction between side-chain β-keto ester and primary amine groups

Functional pH-responsive polymers containing dynamic enaminone linkages for the release of active organic amines

Dynamic covalent bonds have attracted attention for the development of pH-responsive polymers, however, studies using acid-cleavable enaminone linkages as a means of controlled drug release have been limited. Herein, we...

Amino acid-derived stimuli-responsive polymers and their applications

The recent advances achieved in the study of various stimuli-responsive polymers derived from natural amino acids have been reviewed.

Self-healable hydrogels with NaHCO3 degradability and a reversible gel–sol–gel transition from phenolic ester containing polymers

Self-healable hydrogels which can be degraded by NaHCO₃ were prepared. Based on the reversible properties the hydrogel showed gel–sol–gel transition under a variety of stimuli.

Self-healable hydrogels with cross-linking induced thermo-responsiveness and multi-triggered gel–sol–gel transition

Self-healable hydrogels with cross-linking induced thermo-responsiveness (CIT) were prepared from ketone-group containing P(DMA-stat-DAA).

Self-Activated Healable Hydrogels with Reversible Temperature Responsiveness

The self-healable polymer hydrogel along with reversible temperature responsiveness was prepared through self-catalyzed dynamic acylhydrazone formation and exchange without any additional stimulus or catalyst. The hydrogel was prepared from a copolymer of N-isopropylacrylamide and acylhydrazine P(NIPAM-co-AH) cross-linked by PEO dialdehyde. Besides self-healed under catalysis of acid and aniline, the hydrogel can also self-heal activated by excess of acylhydrazine groups. Without interference of catalyst during the hydrogel formation and self-healing, this kind of hydrogel prepared from biocompatible polymers can be used in more areas including biotechnology and be more persistent. The hydrogel with a large part of the PNIPAM segment also showed temperature responsiveness around body temperature influenced by the variation in group ratio. This self-healable hydrogel has great potential application in areas related to bioscience and biotechnology.