-协调框架作为高效的平台,用于敏感的电化学检测Carmoisine
Jeevanantham Arumugam1, Ganesan Shanmugam1, Monisha Venkatesan1
1Energy Conversion and Energy Storage Laboratory, Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu-603203, India.
Langmuir : the ACS journal of surfaces and colloids
|January 13, 2026
概括
- 新协调框架 (Co-Nd CFs) 允许敏感的电化学检测食品中的卡莫辛 (CAR). 这种新的方法为分析合成食品色素提供了稳定和可重复的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 分析化学 分析化学
背景情况:
- 合成食品染料,如卡尔莫辛 (CAR),需要在食品中采用敏感的检测方法.
- 现有的方法可能缺乏敏感性或稳定性,无法准确量化微量水平.
研究的目的:
- 开发一种新的电化学传感器,用于敏感和选择性检测卡尔莫因 (CAR).
- 使用-协调框架 (Co-Nd CFs) 来修改玻璃碳电极 (GCE).
主要方法:
- 使用溶热方法合成Co-Nd CFs.
- 使用Co-Nd CFs.修改一个玻璃碳电极 (GCE).
- 在B-R缓冲器 (pH 7.0) 中使用三电极系统对CAR进行电化学检测.
主要成果:
- Co-Nd CFs/GCE 呈现出一种无形的,半孔的结构.
- 实现了对CAR的敏感和线性电化学反应.
- 获得了0.0557μM的低检测极限 (LOD) 和0.1863μM的量化极限 (LOQ).
- 证明了高稳定性 (RSD = 3.996%) 和可重复性 (RSD = 3.95%).
结论:
- Co-Nd CFs/GCE 平台为检测合成食品色素的微量水平提供了可行的解决方案.
- 传感器的性能归因于高离子导电性,增强的质量传输,大电活性表面积和协同的Co-Nd相互作用.
- 提出的方法适用于食品样本的现实世界电化学分析.
更多相关视频
07:07Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology
Published on: March 12, 2015
10.0K
13:15Fabrication of Electrochemical-DNA Biosensors for the Reagentless Detection of Nucleic Acids, Proteins and Small Molecules
Published on: June 1, 2011
34.5K
相关概念视频
00:43Complexometric Titration: Ligands
2.2K
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...
2.2K
01:17Controlled-Potential Coulometry: Electrolytic Methods
660
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
The chosen potential...
660
02:51Metal-Ligand Bonds
23.9K
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...
23.9K
02:42Valence Bond Theory
11.2K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.2K
03:02Colors and Magnetism
13.9K
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...
13.9K
02:54Coordination Compounds and Nomenclature
26.2K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
26.2K