通过用Cucurbit[n]uril (n = 7, 8) 进行宿主-客人复合,调节回沙的氧化还原活性
Jia Liu1,2,3, Su-Hang He4, Hugues Lambert1,2
1Department of Chemistry, University College London (UCL), London, United Kingdom.
Frontiers in chemistry
|January 1, 2024
概括
研究人员使用cucurbiturils调节了resazurin (RZ) 的电化学活性. 由CB8激活的RZ进行封装.
科学领域:
- 超分子化学 超分子化学
- 电化学 电化学 电化学
- 化学传感器 化学传感器
背景情况:
- 雷萨祖林 (RZ) 是一种光探测器,其传感能力取决于其氧化还原状态.
- 对于设计有效的传感测试,RZ的电化学反应性至关重要.
- 调节RZ的氧化还原特性可以提高其在生物传感中的实用性.
研究的目的:
- 为了研究resazurin的双向电化学反应性调制.
- 探索使用cucurbiturils (CBn) 作为宿主分子进行复苏.
- 了解宿主-客人复杂化的反应性变化背后的机制.
主要方法:
- 宿主-客人复杂化与黄素[7]uril (CB7) 和黄素[8]uril (CB8) 的复杂化.
- 使用1H NMR光谱和计算模拟来确认复杂化.
- 通过紫外线对紫外线定位来确定结合常数.
- 使用电压测量进行电化学分析.
主要成果:
- 库库比图里尔 (CBn) 已被证明可以调节resazurin (RZ) 的电化学反应性.
- 在CB8内封装激活了RZ的氧化还原活性,而CB7则关闭了它.
- 观察到的双向调制归因于空洞大小差异影响水分子进入.
- 与环极素相比,库库比图里尔显示出显著更强的调节效应.
结论:
- 用cucurbiturils的宿主-客人复合提供了一种用于控制resazurin电化学行为的新方法.
- 这种方法提供了氧化还原活性的双向调制,使得量身定制的传感应用.
- 这些发现开辟了超分子电化学和传感技术的新途径.
更多相关视频
06:01EPR Monitored Redox Titration of the Cofactors of Saccharomyces cerevisiae Nar1
Published on: November 26, 2014
13.5K
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
9.2K
相关概念视频
Complexation Equilibria: The Chelate Effect
518
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
518
Covalently Linked Protein Regulators
6.8K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
6.8K
Oxidation of Phenols to Quinones
3.1K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
3.1K
![Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F61682.jpg&w=3840&q=50)