相关实验视频

Updated: Sep 11, 2025

Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

Published on: April 19, 2021

基于生物相容性的胆氨基酸离子液体的键动态及其温度依赖性

Ying Chen¹, Jianying Qu¹, Xinyi Li¹

¹School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China.

Journal of molecular graphics & modelling

|August 14, 2025

概括

胆氨基酸离子液体表现出强烈的键相互作用,受离子链长度的影响. 温度上升会减弱相互作用,但会增强导电性,同时观察到离子聚合.

科学领域:

绿色化学绿色化学
材料科学材料科学材料科学
计算化学计算化学

背景情况:

胆氨基酸离子液体 ([Ch][AA]) 由于其有利的特性,被认为是环保的溶剂.
了解它们的键和运动性质对于优化它们的应用至关重要.

研究的目的:

为了研究四种[Ch][AA]离子液体的键运动性质.
分析温度和离子链长度对这些特性的影响.
阐明[Ch][AA]系统的结构和动态行为.

主要方法:

密度函数理论 (DFT) 的计算.
分子动力学 (MD) 模拟.
分子中的原子 (AIM),非共价相互作用 (RDG),辐射分布函数 (RDF) 和空间分布函数 (SDF) 的分析.

主要成果:

确定了两个主要的键:O_c-H_c1···O_a和C_c-H_c2···O_a,前者更强.
在较长的离子链下观察到键强度的增加.
发现更高的温度会削弱粒子间相互作用,增加扩散和离子导电性.
他注意到由侧链相互作用驱动的离子聚合成集群,这在较长的离子中变得更加明显.
基组有助于广泛的键网络,增加粘度.

结论:

在[Ch][AA]中的结网是控制它们特性的一个关键因素.
阳离子结构显著影响键强度和聚合行为.
温度在调整扩散和导电性等动态性质方面发挥着至关重要的作用.
这些发现为设计和利用[Ch][AA]作为先进的绿色溶剂提供了见解.

关键词:

链条的长度链条的长度胆氨基酸离子液体胆氨基酸离子液体在 DFT 方面,它是最重要的.气键是一种气键.在这里,我们可以看到MDMDMD.

更多相关视频

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

相关概念视频

Alkyl Halides

Alkyl Halides

Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...

Physical Properties of Carboxylic Acid Derivatives

Physical Properties of Carboxylic Acid Derivatives

Intermolecular forces dictate several physical properties such as boiling points, melting points, solubilities, and so forth. They are classified into four types: ionic forces, hydrogen bonds, dipole–dipole forces, and dispersion forces. Ionic forces are the strongest, while dispersion forces are the weakest.
Among the carboxylic acid derivatives, the boiling points of acid chlorides and esters are very similar and are the lowest in the series. Acid anhydrides have slightly higher boiling...

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.

Aqueous Solutions and Heats of Hydration

Aqueous Solutions and Heats of Hydration

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...

Hydrogen Bonds

Hydrogen Bonds

A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...