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元素量子点:一种多功能光纳米探针,用于同时检测和清理基

Ziyi Gao¹, Zhengyu Huang¹, Jisuan Tan²

¹Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guangxi Colleges and Universities Key Laboratory of Natural and Biomedical Polymer Materials, and College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Langmuir : the ACS journal of surfaces and colloids

|June 3, 2025

概括

研究人员开发了新的光量子点 (SeQD),可以检测和中和有害的基基 (·OH). 这些无金属纳米材料为管理生物系统中氧化应激提供了有前途的工具.

科学领域:

纳米材料科学科学纳米材料科学
生物医学工程生物医学工程
化学生物学化学生物学

背景情况:

在生物医学研究中,开发有效的纳米探测器来检测和中和活性氧物种 (ROS) 是至关重要的.
现有的方法在实现双重功能和高效的ROS管理方面经常面临挑战.
氧化应激是由ROS驱动的,就像基基 (·OH) 一样,有助于各种疾病.

研究的目的:

为了合成新的,无金属的光纳米探针,同时检测和中和基 (·OH).
研究元素量子点 (SeQD) 作为双响应纳米探针的潜力.
评估SeQD在细胞成像和氧化应激实时监测中的有效性.

主要方法:

从散装的和乙烯胺中直接合成元素量子点 (SeQDs) 的简单的一溶热合成.
优化合成条件 (180°C4.5小时) 以最大限度地提高产品产量和光发光量产量 (PLQY).
描述SeQD属性,包括单光子和双光子光,检测极限,OH的线性范围和细胞毒性.

主要成果:

优化的SeQD显示出产品产率为7.1±0.5%,PLQY为21.4±1.3%,具有强烈的两光子光.
SeQD证明了选择性检测OH的低检测极限 (330nM) 和高效的清理能力.
观察到低细胞毒性和有效的细胞吸收,使得细胞内OH的成功单光和双光子光成像.

结论:

建立了一种可扩展的,单一的合成高光SeQDs的方法.
SeQD具有独特的双重功能,用于检测和中和基 (·OH).
这些SeQD代表了研究和管理生物系统中氧化损害的有希望的平台.

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