期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 303, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201800305
关键词
injectability; metallohydrogels; multistimulus-responsiveness; self-healing; supramolecular chemistry
资金
- National Natural Science Foundation of China [31771080, 51772106, 51702104]
- Natural Science Foundation of Guangdong Province [2016A030308014]
- Technological Projects of Guangzhou, China [201604020110]
- China Postdoctoral Science Foundation [2017M622641, 2017M622686]
- Beijing Municipal Natural Science Foundation [7161001]
- China Scholarship Council (CSC)
Multifunctional hydrogel bioadhesives have great prospects in biomedical applications, but their design still faces great challenges, such as multiple and tedious chemical modifications. However, it is difficult to integrate injectable, self-healing, and stimulus-responsive properties together. A facile approach based on dynamic metal-ligand coordination chemistry between chondroitin sulfate (CS) and Fe3+ in the design and synthesis of novel multifunctional metallohydrogel bioadhesives is reported. This CS-based hydrogel not only has strong tissue adhesion superior to that of commercial fibrin glue, but also exhibits an excellent self-healing ability and injectability, which are beneficial in the field of bioadhesives. Moreover, the hydrogels undergo a rapid gel-sol transformation in response to multiple external stimuli, including pH, ions, neutral molecules, and chemical redox reactions enabling the rapid removal of the bioadhesive. In addition, metallohydrogels are rapidly formed within 10 s, quick enough to promptly seal the tissue. Importantly, the multifunctional CS-based bioadhesives are shown to exhibit good biocompatibility, thus allowing the developed materials to meet key requirements for next-generation tissue adhesives.
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