聚合诱导的C-C键在电极上的形成是由水的表面张力驱动的
1State Key Laboratory of Coordination Chemistry, Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China.
Nature communications
|August 30, 2024
概括
本研究介绍了一种只使用水的绿色电化学合成方法. 它通过控制基质聚合,提高反应效率和产品纯度来实现激进交叉合的高产量.
科学领域:
- 绿色化学 绿色化学
- 有机合成 有机合成
- 电化学 电化学 电化学
背景情况:
- 传统的电化学有机合成依赖于有机溶剂和支持电解质,这对环境不利.
- 有机介质和电解质的使用对电合成的可持续性和废物减少提出了挑战.
研究的目的:
- 开发一种使用100%水作为溶剂,对环境无害的电化学合成协议.
- 为了研究不和化合物的聚合驱动的电化学基质交叉合.
- 通过新的反应控制机制,提高电合成的绿色和效率.
主要方法:
- 使用100%的水作为电化学根基交叉合的唯一溶剂.
- 在电极表面使用基质的聚合来限制激素中间体.
- 实施冷过,用于产品分离和溶剂循环利用.
主要成果:
- 在水系统中达到高达90%的产量,几乎具有定量化选择性.
- 证明电极上的基质聚合防止了副作用,并增强了激素的中间寿命.
- 促进了产品的简单隔离和重复的溶剂回收,显著改善了该协议的绿色指标.
结论:
- 聚合驱动的纯水中的电化学基质交叉合提供了一个高效和可持续的合成路线.
- 通过水性介质中的基质聚合来控制激进反应是提高选择性和产量的可行策略.
- 这种以水为基础的协议通过减少废物和简化产品回收来显著推进绿色电化学合成.
相关概念视频
Cohesion
54.1K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
On a...
54.1K
Intermolecular Forces
58.0K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
58.0K
Coagulation
278
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
278
Aqueous Solutions and Heats of Hydration
14.6K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
14.6K
Noncovalent Attractions in Biomolecules
49.5K
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
49.5K
Surface Tension, Capillary Action, and Viscosity
27.6K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
27.6K


