基于三结构的光探针的开发,用于在环境和生物样本中检测PhSH
Guoxing Hu1, Xianteng Meng1, Chao Zang1
1School of Pharmaceutical Science, Nanjing Tech University, China.
概括
开发了一种新的近红外光探针,用于敏感和快速检测基醇. 这种探针表现出高特异性和低细胞毒性,使其能够在真实水样和活细胞成像中有效检测.
科学领域:
- 分析化学 分析化学
- 化学传感器 化学传感器
- 光光谱学 光光谱学
背景情况:
- 甲是一种有毒化合物,需要敏感的检测方法.
- 现有的检测方法可能缺乏特异性或速度.
- 开发先进的光探测器对于环境和生物监测至关重要.
研究的目的:
- 开发一种新的近红外 (NIR) 光探针,用于快速和特定检测基醇.
- 调查探测器的光物理特性,包括斯托克斯转移和响应时间.
- 为了评估探头在真实水样和活细胞成像中的适用性.
主要方法:
- 基于分子内电荷转移 (ICT) 原理的NIR光探针的设计和合成.
- 整合了基于三的光芯和二硫酸的识别部位,用于 thiophenol.
- 探测器的光谱特性,响应动力学和选择性的表征.
- 使用光强度量化基醇的量化和检测极限的确定.
- 在真实水样中应用探头,并通过MTT测定对其在活细胞成像中的性能进行评估.
主要成果:
- 开发的探测器表现出220nm的显著斯托克斯转移.
- 探测器表现出快速反应和对甲的高特异性.
- 观察到700nm的光强度和基度 (0-100μM) 之间的线性关系,低检测极限为45nM.
- 在真实水样中成功应用探针来检测二甲.
- MTT测定证实了低细胞毒性,并且在活细胞中实现了出色的光成像.
结论:
- 开发的NIR光探测器提供了一种敏感,快速和特定的方法来检测甲.
- 该探测器在活细胞成像中的低细胞毒性和有效性突显了其在生物和环境应用中的潜力.
- 这种探测器是复杂矩阵中监测基醇的宝贵工具.
更多相关视频
相关概念视频
Photoluminescence: Applications
441
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
441
Labeling DNA Probes
8.2K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.2K
Variables Affecting Phosphorescence and Fluorescence
549
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
549
FISH - Fluorescent In-situ Hybridization
20.9K
Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...
20.9K
Fluorescence and Phosphorescence: Instrumentation
664
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
664


