A Sol-Gel Transition and Self-Healing Hydrogel Triggered via Photodimerization of Coumarin.

ABSTRACT: Reversible chemical covalency provides a path to materials that can degrade and recombine with appropriate stimuli and which can be used for tissue regeneration and repair. However, designing and preparing efficient and quickly self-healing materials has always been a challenge. The preparation strategies of photoresponsive gels attract a lot of attention due to their precise spatial and temporal control and their predetermined response to light stimulation. In this work, the linear copolymer PAC was synthesized via precipitation polymerization of acrylic acid and 7-(2-acrylate-ethoxylated)-4-methylcoumarin. The coumarin groups on the copolymer PAC side chains provide a reversible chemical cross-linking via photostimulation, which achieves reversible regulation of the gel network structure

SUBMITTER: Ye Y 

PROVIDER: S-EPMC10815305 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature