期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 24, 页码 20895-20903出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b04956
关键词
nanoparticles; hydrogel; self-healing; photothermal effect; antibacterial
资金
- National Natural Science Foundation of China [51673022, 51403018]
- State Key Laboratory for Advanced Metals and Materials [2016Z-08]
- State Key Laboratory of Fine Chemicals [KF1613]
Copper (Cu) nanoparticles possess unusual electrical, thermal, and optical properties. However, applications of these materials are often limited by their tendency to oxidize. We prepared Cu nanoparticles by a simple polyol method, with a good control over the particle size. The reaction required no inert atmosphere or surfactant agents. The as-prepared Cu nanoparticles showed good resistance to oxidation in solution. These Cu nanoparticles were then incorporated into a biocompatible polysaccharide hydrogel, which further stabilized the nanoparticles. The hybrid hydrogel exhibited a rapid self-healing ability. Because of the excellent photothermal conversion properties of the embedded Cu nanoparticles, the hybrid hydrogel showed rapid temperature elevation under laser irradiation. The hybrid hydrogel showed limited cytotoxicity; however, under laser irradiation the hydrogel displayed antibacterial properties owing to the heating effects. This study demonstrates that our hybrid hydrogel may have applications in biomedical fields and photothermal therapy.
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