期刊
MACROMOLECULAR BIOSCIENCE
卷 22, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.202100386
关键词
hydrogel; nanoparticles; photothermal antibacterial agent; wound dressing
资金
- Natural Science Foundation of Ningbo [2021J071]
- National Natural Science Foundation of China [32000942]
- Natural Science Foundation of Zhejiang [LY20C100001]
- Major Project of 2025 Sci&Tech Innovation of Ningbo [2018B10052]
A novel photothermal antibacterial agent, double bonds-ended polyaniline nanoparticle (Me-PANI NP), was synthesized and incorporated into a hydrogel wound dressing, providing controllable photothermal antibacterial treatment and improved mechanical flexibility. This development has the potential to advance wound healing and infection control in a more effective and efficient manner.
Antibacterial hydrogel wound dressing is highly desirable in wound healing and infection control. However, the development of antibacterial hydrogels with controllable antibacterial properties and adequate mechanical properties without bacterial resistance and potential toxicity remains a challenge. Herein, a double bonds-ended polyaniline nanoparticle (Me-PANI NP) is synthesized, which can convert light energy into heat upon near-infrared (NIR) irradiation, and it is used as a novel photothermal antibacterial agent. The obtained bonds-ended Me-PANI NPs are subsequently involved in polyacrylamide (PAM) polymerization and served as chemical crosslinking points to form the Me-PANI NPs@PAM hydrogel, endowing the hydrogel with controllable photothermal antibacterial abilities upon NIR irradiation without time and space limit. Importantly, due to the energy dissipation of Me-PANI NPs under stretch, the Me-PANI NPs@PAM hydrogel achieves a maximum stretching ratio of 400% mechanical flexibility. The developed hydrogel can be potentially applied as a novel wound dressing to realize controllable treatment of bacterial infections and accelerate skin wound healing.
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