金属离子调制电子转移在金属生物化合物中:光色学和可差异胺检测
Yan-Yan Zhang1, Ze-Yao Chen1, Qian-Ge Li1
1Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China.
Inorganic chemistry
|August 18, 2024
概括
研究人员通过改变金属离子来调节金属生物化合物 (MVC) 中的电子转移. 基于的MVC显示出独特的光色和二甲基胺检测,导致海鲜新鲜感应器.
科学领域:
- 材料科学 材料科学 材料科学
- 协调化学 协调化学
- 化学传感器 化学传感器
背景情况:
- 电子转移 (ET) 在维奥基因衍生化合物中至关重要,但很少被理解和控制.
- 金属生物化合物 (MVC) 提供了一个调整ET属性的平台.
- 控制ET机制是开发先进功能材料的关键.
研究的目的:
- 开发一种在晶体金属生物化合物 (MVC) 中调节电子转移 (ET) 的策略.
- 调查不同过渡金属离子对ET特性和MVCs由此产生的功能的影响.
- 探索特定的MVC在光色化,分析物检测和传感器应用中的潜力.
主要方法:
- 三个MVCs (Mn-1,Co-2,Cd-3) 的合成,使用不同的过渡金属离子 (d5,d7,d10) 的一致协调环境.
- 通过结构分析和理论计算来描述MVC.
- 评估合成化合物的光色行为和二甲基胺检测能力.
- 用于生物胺传感的试验条 (Cd-3-PAN) 的制造.
主要成果:
- 成功合成了三种具有不同金属离子的MVC,保持类似的协调球体.
- 化合物Cd-3表现出显著的光色和选择性二甲基胺检测.
- 离子依赖性质与金属离子诱导的双二核中的电子密度调制有关.
- 一个Cd-3-PAN测试条显示了用于海鲜新鲜度评估的二甲基胺蒸汽的敏感检测.
结论:
- 过渡金属离子选择对MVC中的ET过程和特性产生重大影响.
- 由于定制的电子调制,CD-3显示了独特的光色和传感能力.
- 开发的传感器显示出在食品质量监测中的实际应用的前景.
更多相关视频
11:04Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
Published on: September 7, 2019
9.1K
05:47Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
7.7K
相关概念视频
02:51Metal-Ligand Bonds
20.7K
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...
20.7K
01:18Effects of EDTA on End-Point Detection Methods
267
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
267
03:02Colors and Magnetism
11.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.6K
00:43Complexometric Titration: Ligands
930
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...
930
00:39Complexometric Titration: Overview
6.2K
Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free...
6.2K
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