自愈水凝胶
乙烯醇
材料科学
抗氧化剂
聚合物
香兰素
自愈
组合化学
有机化学
化学
高分子化学
复合材料
医学
替代医学
病理
作者
Siyu Pan,Nan Zhang,Xianzhe He,Fang Zhao,Yuwei Wu,Yen Wei,Lei Tao
出处
期刊:ACS Macro Letters
[American Chemical Society]
日期:2023-07-13
卷期号:12 (8): 1037-1044
被引量:8
标识
DOI:10.1021/acsmacrolett.3c00298
摘要
Efficient routes for the preparation of functional self-healing hydrogels from functional polymers are needed. In this study, we developed a strategy to effectively produce a vanillin-modified poly(vinyl alcohol) (PVA-vanillin) through the Hantzsch reaction. This polymer was cross-linked with a phenylboronic acid-containing polymer (PB) that was also prepared using the Hantzsch reaction to fabricate a hydrogel through borate ester linkages under mild conditions (25 °C, pH ∼ 7.4). This hydrogel had excellent antioxidant abilities due to the 1,4-dihydropyridine (DHP) rings and the vanillin moieties in the hydrogel structures; it was also self-healable and injectable owing to the dynamic borate ester linkages. Furthermore, the antioxidant self-healing hydrogel had low cytotoxicity and exhibited favorable safety in animal experiments, indicating its potential as a safe implantable cell or drug carrier. This study developed a method for preparing functional polymers and related self-healing hydrogels in a facile manner; it demonstrated the value of the Hantzsch reaction in exploiting antioxidant self-healing hydrogels for biomedical applications, which may provide insight into the design of other functional self-healing hydrogels through different multicomponent reactions.
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