Self-Healing and Multistimuli-Responsive Hydrogels Formed via a Cooperation Strategy and Their Application in Detecting Biogenic Amines

被引:48
作者
Tang, Liuyan [1 ]
Liao, Shanshan [1 ]
Qu, Jinqing [1 ]
机构
[1] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
关键词
hydrogels; metal-ligand coordination; hydrophobic interaction; self-healing multistimuli responsive; biogenic amines; food spoilage; SOL-GEL TRANSITION; AQUEOUS-SOLUTION; CROSS-LINKING; LIGAND; IONS; MEAT; COMPLEXATION; POLYMERSOMES; NETWORKS; BEHAVIOR;
D O I
10.1021/acsami.8b09534
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We reported here a new platform of supra molecular hydrogels cross-linked by the cooperation of metal-ligand coordination and hydrophobic interaction. A salicylaldehyde benzoyl hydrazone-terminal poly(ethylene glycol) (2SBH-PEG) was synthesized and formed small micelles in an aqueous environment. Addition of Ni2+ connected the low-molecular-weight 2SBH-PEG into a metallopolymer via metal-ligand coordination and led to micelle aggregation, resulting in gelation due to the enhancement of hydrophobic interaction. The forming hydrogel, Ni-PEGeI, exhibited rapid self-healing ability and reversible pH-responsive property. Because of the containing metal coordination bond, it was also sensitive to the strong competing ligands, such as ethylenediaminetetraacetic acid (EDTA) and pyridine. In addition, Ni-PEGel showed colorimetric changes when exposed to biogenic amine (BA) vapor. The color development of Ni-PEGel toward BAs makes it a good candidate in monitoring food spoilage.
引用
收藏
页码:27365 / 27373
页数:9
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