在NIR染料中产生强基的I型光敏化,通过强烈的分子内运动来促进协同治疗
Runfeng Lin1, Junkai Liu2, Weilin Xu3
1College of Chemistry and Materials Science, Jinan University, Guangzhou, 510632, China.
Advanced materials (Deerfield Beach, Fla.)
|May 26, 2023
概括
这项研究引入了一种新的近红外I型光敏感剂,可以通过最大化分子内运动来增强基生成. 这一突破推动了分子机器的发展,并提供了改进的癌症治疗方法.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 生物医学工程 生物医学工程
背景情况:
- I型光敏剂 (PSs) 对于无氧癌症治疗至关重要,特别是产生基基 (·OH).
- 有效的固态分子内运动对于开发分子机器和电机至关重要,但它与PS疗效的联系仍然未被探索.
研究的目的:
- 开发一种基于pyrazine的近红外型IPS,通过分子内运动增强OH生成.
- 为了改善癌症治疗,研究分子内运动和光敏化之间的关系.
主要方法:
- 设计了一种基于pyrazine的近红外型IPS,具有捐赠者-接受者 (D-A) 效应.
- 设计了分子内和分子间的相互作用,以最大限度地提高分子运动 (纽带拉伸,群体旋转).
- 评估光热转换效率,单片三片分裂和OH生成.
主要成果:
- 由分子内运动驱动的86.8%的高光热转换效率.
- 观察到一个小的单元-三元分裂 (0.07 eV) 促进系统间交叉.
- 强烈的分子内运动和增强的OH生成之间有很强的相关性.
- 展示了使用生物相容PS的优质成像导向癌症协同疗法.
结论:
- 开发的PS有效地将分子内运动与强烈的光敏化和光热效应联系起来.
- 这项工作为生物医学应用和固态分子机器的先进PS开发铺平了道路.
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