4.7 Article

Synthesis of multicolor luminescent carbon dots based on carboxymethyl chitosan for cell imaging and wound healing application: In vitro and in vivo studies

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DOI: 10.1016/j.ijbiomac.2023.127405

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Carbon dots; Fluorescent; Carboxymethyl chitosan; Biocompatibility; Antibacterial; Wound healing

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In this study, carbon quantum dots with multicolor luminescence properties and higher quantum yields were prepared using a facile one-pot hydrothermal method. The experimental results showed that these carbon dots had excellent biocompatibility, antibacterial properties, and the ability to promote wound healing.
The construction of biomaterials that can facilitate wound healing is significantly challenging in the medical field, and bacterial infections increase this complexity. In this study, we selected the biomacromolecule car-boxymethyl chitosan as a carbon source and citric acid as an auxiliary carbon source. We prepared carbon quantum dots with multicolor luminescence properties and higher quantum yields (QYs) using a facile one-pot hydrothermal method. We characterized them to select carbon dots (CDs) suitable for cell growth. Subsequently, their biocompatibility with L929 cells, antibacterial properties against Staphylococcus aureus, and efficiency in promoting wound healing in vivo were investigated. Our experimental results showed that CDs at an appropriate concentration had excellent bioimaging ability, were suitable for cell growth, and accelerated the healing of infected wounds. We believe these bioactive CDs have great potential in promoting wound healing.

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