链接器安装在金属有机框架中,用于增强定量回氧物种识别
Zongsu Han1, Kun-Yu Wang1, Rong-Ran Liang1
1Department of Chemistry, Texas A&M University, College Station, Texas, 77843, United States.
Angewandte Chemie (International ed. in English)
|December 17, 2024
概括
这项研究开发了使用金属有机框架 (MOF) 的新型发光传感器,用于检测有害的减少剂和氧化剂. 传感器通过可见的颜色变化和发光提供快速,定量检测.
科学领域:
- 材料科学 材料科学 材料科学
- 化学传感器 化学传感器
- 纳米技术 纳米技术
背景情况:
- 减少剂和氧化剂需要迅速监测,因为它们在工业和自然环境中的反应性.
- 金属有机框架 (MOF) 为功能化提供了多功能平台.
- 对氧化还原物种开发快速和灵敏的检测方法至关重要.
研究的目的:
- 通过链接装置将氧化还原活性染料纳入基于的柔性MOF (PCN-700) 中.
- 创建发光传感器,用于定性和定量检测减少剂和氧化剂.
- 为了证明MOF作为适应性的传感材料.
主要方法:
- 利用链接器安装策略,用氧化还原活性染料 (Resazurin和Amplex Red) 实现PCN-700的功能化.
- 研究了功能化MOF的氧化还原反应,从而产生一种共同的产物 (Resorufin).
- 监测可见颜色和发光强度的变化,用于分析物检测.
主要成果:
- 成功地将氧化还原活性染料纳入PCN-700.
- 从还原和氧化反应中形成Resorufin,导致明显的颜色变化.
- 在氧化还原反应时,发光强度的显著增强,使定量检测成为可能.
- 证明了用于传感的电子转移机制,超越了能量转移.
结论:
- 开发了高效的发光传感器,以快速检测减少剂和氧化剂.
- 展示了MOF作为可设计传感材料的多功能性.
- 提出了一种简单的方法来创建先进的化学传感器.
相关概念视频
02:51Metal-Ligand Bonds
20.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.6K
01:26Redox Titration: Other Oxidizing and Reducing Agents
238
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
238
00:43Complexometric Titration: Ligands
906
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
906
02:34Structural Isomerism
19.1K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
19.1K
01:23Properties of Organometallic Compounds
944
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
944