埃莫丁衍生的红色发射碳点:光驱动的ROS生成和非发光模式中的抗氧化活性
Shichao Jiang1, Borui Su1, Gaowei Li2
1National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
Biomaterials
|June 17, 2025
概括
研究人员开发了红色发射碳点 (CDs),可以在生成和清理活性氧物种 (ROS) 之间切换. 这种可切换光的双功能为纳米医学应用提供了精确的控制.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 反应性氧物种 (ROS) 在健康和疾病中具有双重作用,需要对治疗策略进行精确的监管.
- 目前的纳米医学方法需要先进的材料来控制ROS调制.
研究的目的:
- 设计和合成具有光可切换的亲氧化剂和抗氧化剂功能的红色发射碳点 (CD).
- 探索这些CD的潜力,作为精密纳米医学的智能超神经药剂.
主要方法:
- 从埃莫丁和尿素中合成N-化碳点 (Emo-CDs) 的溶热合成.
- 红色发射 (>650nm) 的特征,ROS生成/清除,水溶性和生物相容性.
- 密度函数理论 (DFT) 计算,以了解N-doping对光谱特性和ROS生成的影响.
主要成果:
- 合成的N-dopedCD显示出红色的发射与增强的组织透.
- 情感CD显示了光线下高效的ROS生成,并在黑暗中搜寻ROS.
- DFT计算证实了N-doping在优化光谱特性和促进ROS生成方面的作用.
- 这些CD具有卓越的水溶性和生物相容性,可在体内使用.
- 观察到氧化和抗氧化状态之间的可逆切换.
结论:
- 开发了一种新的红色发射碳点,具有可切换光的亲氧化剂/抗氧化剂双功能.
- 这些智能CD可以精确调节纳米医学中的氧化应激.
- 这一发现为治疗性药物提供了一个新的范式,在光动力学和抗氧化疗法中具有应用.
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