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Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

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基于的高效升级纳米颗粒用于单颗粒成像和温度传感.

Yahya A Alzahrani¹, Abdulaziz Alromaeh², Masfer Alkahtani¹

¹Future Energy Technologies Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia.

Materials (Basel, Switzerland)

|June 28, 2023

概括

此摘要是机器生成的。

小YLiF₄:Yb,Er上转化纳米粒子 (UCNPs) 能够实现敏感的单粒子生物成像和光学温度传感. 这些高效的UCNP的性能优于传统的探测器,为先进的生物应用提供了新的可能性.

关键词:

量子传感是一种量子感应.一个粒子成像技术温度的温度的温度的温度的温度上方转换纳米粒子

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Last Updated: Jul 25, 2025

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科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
生物医学光学生物医学光学

背景情况:

上转化纳米粒子 (UCNPs) 显示出对生物光成像和量子传感的前景.
当前的应用程序经常使用UCNP的集合,限制分辨率和灵敏度.
单粒子分析对于理解UCNP行为和最大限度地发挥其潜力至关重要.

研究的目的:

合成小而高效的YLiF₄:Yb,Er UCNP用于单颗粒应用.
评估这些UCNP在生物成像和光学温度传感方面的性能.
将UCNP性能与量子点 (QD) 和有机染料等常规探针进行比较.

主要方法:

合成的YLiF₄:Yb,Er UCNPs. 的时间.
单粒子成像和光发光度测量.
在单个粒子层面进行光学温度传感实验.
在相同条件下与QD和有机染料进行比较分析.

主要成果:

从单个UCNPs获得了明亮和光稳定的上转换辐射.
与QD和有机染料相比,在单颗粒水平上表现出优异的性能 (比QD和有机染料好9倍).
在生物温度范围内展示了敏感的光学温度传感能力.
已确认低激光强度激发 (20W/cm2) 足以提供高质量的信号.

结论:

小YLiF₄:Yb,Er UCNP为单粒子成像提供了出色的光学性能.
这些UCNP为生物环境中的光学温度传感提供了一个敏感的平台.
开发的UCNP代表了光标记器在生物成像和传感方面的重大进步.