Preparation of polyimide-metal complexes with tunable Sol-Gel transition by Introduction of Zn(II)-Coordination

Gan, Feng; Wang, Junkang; Wen, Jiaxiang; Zhou, Jiaqi; Mo, Jinpeng; Han, Shaobo; Wu, Yanran; Yi, Ningbo

doi:10.1016/j.polymertesting.2022.107615

Cited by 7 publications

(1 citation statement)

References 39 publications

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“…Inspired by nature, specific biomaterials that possess abundant metal-coordination bonds, for example, mussels, exhibit an impressive blend of high toughness, adhesion, and reversibility [32][33][34][35][36][37]. As a result, this concept of biomaterials is extensively used by researchers in the development of functional hydrogels [38][39][40][41][42][43][44]. Das et al have developed hydrogels of poly(methacrylamide-co-vinylimidazole)-M 2+ (M = Ni and Zn), which demonstrate an exceptionally broad range of mechanical properties, rapid self-recovery, remarkable fatigue resistance, efficient self-healing, and temperature-dependent shape memory behavior [38].…”

Section: Introductionmentioning

confidence: 99%

Stretchable, Adhesive, and Biocompatible Hydrogel Based on Iron–Dopamine Complexes

Lee,

Huang,

Wang

et al. 2023

Polymers

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Hydrogels’ exceptional mechanical strength and skin-adhesion characteristics offer significant advantages for various applications, particularly in the fields of tissue adhesion and wearable sensors. Herein, we incorporated a combination of metal-coordination and hydrogen-bonding forces in the design of stretchable and adhesive hydrogels. We synthesized four hydrogels, namely PAID-0, PAID-1, PAID-2, and PAID-3, consisting of acrylamide (AAM), N,N′-methylene-bis-acrylamide (MBA), and methacrylic-modified dopamine (DA). The impact of different ratios of iron (III) ions to DA on each hydrogel’s performance was investigated. Our results demonstrate that the incorporation of iron–dopamine complexes significantly enhances the mechanical strength of the hydrogel. Interestingly, as the DA content increased, we observed a continuous and substantial improvement in both the stretchability and skin adhesiveness of the hydrogel. Among the hydrogels tested, PAID-3, which exhibited optimal mechanical properties, was selected for adhesion testing on various materials. Impressively, PAID-3 demonstrated excellent adhesion to diverse materials and, combined with the low cytotoxicity of PAID hydrogel, holds great promise as an innovative option for biomedical engineering applications.

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