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基兴奋剂可显著抑制形态放松和分子间非辐射衰变,改善近红外光成像

Yuying Liang¹, Yonghui Pan¹, Lu Chen¹

¹State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China.

Angewandte Chemie (International ed. in English)

|June 19, 2024

概括

研究人员开发了一种基兴奋剂策略,用于放大二胺 (PDI) 衍生物纳米颗粒中的光,用于增强近红外 (NIR) 生物成像. 这种方法提高了亮度,并使长期的瘤监测成为可能.

科学领域:

材料科学材料科学材料科学
生物医学成像技术生物医学成像技术
有机化学有机化学

背景情况:

二胺 (PDI) 衍生物对于近红外 (NIR) 生物成像至关重要.
在生物环境中优化PDI光仍然是一个挑战.
需要有效的光放大策略和机械学研究.

研究的目的:

开发一种方便和有效的策略,用于在生物环境中放大PDI衍生物光.
为了研究光增强背后的机制.
应用增强的PDI纳米颗粒用于体内生物成像.

主要方法:

一种新的PDI衍生品 (OPE-PDI) 的合成.
研究溶剂对OPE-PDI光和兴奋状态动态的影响.
对重组能量的理论计算.
开发含有八度甘的基化纳米颗粒.
在体外和体内生物成像研究用于瘤检测和监测.

主要成果:

由于抑制了分子间能量转移和分子内非辐射衰变,OPE-PDI在n-hexane (HE) 中显著增强了光.
理论计算证实了HE的重组能量减少,有利于辐射衰变.
与对照组相比,基化OPE-PDI纳米颗粒显示出3倍的光改善.
最佳的纳米颗粒显示出高亮度,抗光变白,低生物毒性.
在体内瘤的探测和长期监测中成功应用.

结论:

一种基兴奋剂策略有效地放大PDI衍生物光,以改善NIR生物成像.
溶剂效应通过调节兴奋状态动态,在光增强中发挥关键作用.
基化PDI纳米粒子是敏感和长期生物成像应用的有希望的工具,特别是在瘤学中.

关键词:

光增强剂的光增强剂分子间能量转移是分子间的.烯二氧化物二氧化物溶剂效应是一种溶剂效应.瘤成像成像瘤成像

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