高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (6): 20240409.doi: 10.7503/cjcu20240409

• 研究论文 • 上一篇    下一篇

基于红光碳点光敏剂的活性收缩水凝胶用于细菌感染的伤口愈合

郝永梁1,2, 李建1,2, 王泽华1,2, 葛介超1,2()   

  1. 1.中国科学院理化技术研究所光化学转换与功能材料重点实验室,北京 100190
    2.中国科学院大学未来技术学院,北京 100049
  • 收稿日期:2024-08-30 出版日期:2025-06-10 发布日期:2024-10-08
  • 通讯作者: 葛介超 E-mail:jchge2010@mail.ipc.ac.cn
  • 基金资助:
    国家自然科学基金(52272052);国家重点研发计划项目(2022YFA1207600)

Active Shrinkage Hydrogel Based on Red Emissive Carbon Dots Photosensitizers for Bacterial Infected Wound Healing

HAO Yongliang1,2, LI Jian1,2, WANG Zehua1,2, GE Jiechao1,2()   

  1. 1.Key Laboratory of Photochemical Conversion and Optoelectronic Materials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China
    2.School of Future Technology,University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2024-08-30 Online:2025-06-10 Published:2024-10-08
  • Contact: GE Jiechao E-mail:jchge2010@mail.ipc.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(52272052);the National Key Research and Development Program of China(2022YFA1207600)

摘要:

N-异丙基丙烯酰胺(NIPAM)、 海藻酸钠(SA)和碳点(CDs)光敏剂为主要原料, 通过自由基聚合和钙离子交联的方法制备了一种基于红光碳点光敏剂的活性收缩水凝胶(PNSP Gel), 用于细菌感染的伤口愈合. PNSP Gel可在体温下(37 ℃)通过活性收缩作用释放出CDs光敏剂, 进一步通过CDs光敏剂的光动力抗菌作用, 有效杀灭伤口部位的细菌, 促进伤口快速愈合. 研究结果表明, PNSP Gel具有良好的释药性能、 光动力抗菌性能以及加速伤口愈合的能力, 为临床伤口管理提供了新的解决方案.

关键词: 碳点, 光动力抗菌, 水凝胶, 伤口愈合

Abstract:

An active shrinkage hydrogel based on red emissive carbon dots(CDs) photosensitizers(PSs) was developed for bacterial infected wound healing. The hydrogel was prepared by using N-isopropylacrylamide (NIPAM), sodium alginate(SA) and CDs PSs as precursors through free radical polymerization and calcium ion cross-linking. The hydrogel could release CDs PSs at body temperature(37 ℃) due to the active shrinkage of the hydrogel. Upon light irradiation, the released CDs PSs can generate singlet oxygen to kill bacteria effectively in the wound site leading to rapid wound healing. In vitro and in vivo results suggest that the developed active shrinkage hydrogel has good drug release, photodynamic antibacterial effects and the ability to accelerate wound healing, thus providing a new type of hydrogel for clinical wound management.

Key words: Carbon dots, Photodynamic antibacterial, Hydrogel, Wound healing

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