相关实验视频
Updated: Sep 3, 2025

06:15
Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
12.1K
含水深性溶剂的结构,组织和异质性
Kai Töpfer1, Andrea Pasti2, Anuradha Das3
1Department of Chemistry, University of Basel, CH-4056 Basel, Switzerland.
Journal of the American Chemical Society
|July 27, 2022
概括
用光谱学和模拟研究深层体混合物揭示了水含量如何影响结构动力学. 较高的水含量促进SCN离子对齐和水形成,影响混合物的异质性.
科学领域:
- 物理化学
- 光谱学
- 计算化学
背景情况:
- 深混合物是具有复杂结构动态的可调节溶剂.
- 了解水含量对这些混合物的影响对于它们的应用至关重要.
- 光谱方法提供了对分子相互作用和动态的洞察.
研究的目的:
- 调查酸/乙胺深混合物的结构动态.
- 了解不同含水量对混合物的光谱性能的作用.
- 将光谱发现与模拟的分子层面见解相关联.
主要方法:
- 使用SCN-离子C-N伸展振动的二维红外 (2D IR) 光谱.
- 太赫兹 (THz) 光谱.
- 分子动力学 (MD) 模拟
主要成果:
- MD模拟准确地复制了观察到的光谱特征.
- 在高含水量时,交叉放松率的急剧增加与平行SCN- anion对齐有关.
- 在THz吸收的非线性增加被归因于较大的水的形成.
结论:
- 2D IR和THz光谱与MD模拟的结合提供了分子层面的理解.
- 水含量显著调节了深层菌混合物的异质性.
- 这种方法为复杂的溶剂系统提供了结构属性关系的见解.
相关概念视频
Entropy and Solvation
7.2K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
7.2K
Solvents
66.5K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
66.5K
Solubility
18.1K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
18.1K
Solution Formation
32.5K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
This selective...
32.5K
Intermolecular Forces and Physical Properties
22.2K
22.2K
General Properties of Solutions
31.6K
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed of varying amounts of two or more types of atoms or molecules. A mixture with a non-uniform composition is a heterogeneous mixture, whereas a mixture with a uniform composition is a homogeneous mixture. The components that make the homogeneous mixture are evenly spread out and thoroughly mixed.
31.6K

