相关实验视频
Updated: Sep 11, 2025

13:05
Ratiometric Imaging of Extracellular pH in Dental Biofilms
Published on: March 9, 2016
10.4K
一个具有顺序激活的比度AIE探头,用于选择性双重检测和化物和低酸的成像
Mingjie Wei1,2,3, Ruiqing Long4, Rong Liu1
1School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, People's Republic of China.
Analytical and bioanalytical chemistry
|August 18, 2025
概括
一个新的光探针可以在生物环境中同时检测化物离子和低酸. 这种双检测系统提供高灵敏度和选择性,为生理学研究推进分析化学.
科学领域:
- 分析化学 分析化学
- 生物医学工程 生物医学工程
- 分子生物学分子生物学
背景情况:
- 在生物环境中同时检测离子 (F−) 和低酸 (HClO) 是具有挑战性的,因为它们具有独特的化学特性.
- 这些分析物在生理过程中起着至关重要的,但又相反的作用,需要精确的检测方法.
研究的目的:
- 设计一种新型的,顺序激活的光探测器 (SA-S-TBM),用于同时检测F−和HClO.
- 通过利用聚合诱导排放 (AIE) 特性,克服现有的双检测系统的局限性.
主要方法:
- 使用了一种连锁激活机制,涉及F-诱导的脱和随后的HClO特定氧化.
- 分析了探测器的光辐射,每个分析物有不同的峰值 (Δλ = 98 nm).
- 在生理条件下评估了敏感性,选择性和细胞透性.
主要成果:
- 该SA-S-TBM探头实现了超高灵敏度,其检测极限为F−的20.3nM和HClO的1.72μM.
- 证明了对竞争生物物种的异常选择性.
- 探测器通过具有低毒性的明显光信号成功地可视化了细胞内F−和HClO.
结论:
- 开发的SA-S-TBM探头代表了双分析器检测技术的重大进步.
- 它的高灵敏度,选择性和细胞透性凸显了其生物检测的潜力.
- SA-S-TBM可以作为一种有价值的工具,用于探索F-和HClO在病理生理过程中的作用.
更多相关视频
07:48High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
Published on: September 30, 2022
1.4K
16:19Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors
Published on: September 10, 2013
11.9K
相关概念视频
Immunofluorescence Microscopy
11.3K
A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
11.3K
Atomic Fluorescence Spectroscopy
496
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
496