Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Intermolecular Forces in Solutions02:28

Intermolecular Forces in Solutions

34.7K
The formation of a solution is an example of a spontaneous process, a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Such a solution is called an ideal solution. A mixture of ideal gases (or gases such as helium and argon,...
34.7K
Freezing Point Depression and Boiling Point Elevation03:12

Freezing Point Depression and Boiling Point Elevation

35.8K
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
35.8K
Chemical and Solubility Equilibria02:21

Chemical and Solubility Equilibria

4.2K
The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ΔGsolution is expressed as the balance of ΔGinteraction against the always-favorable free-energy of mixing, ΔGmixing. Solution formation is favorable if  ΔGsolution is less than zero, whereas it is unfavorable if ΔGsolution is greater than zero. In short, for a solution to form and complete dissolution to take place,...
4.2K
Energetics of Solution Formation02:35

Energetics of Solution Formation

6.8K
The formation of a solution is an example of a spontaneous process, which is a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Formation of the solution requires the solute–solute and solvent–solvent...
6.8K
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

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

45.7K
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...
45.7K
Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

2.9K
The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
2.9K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Microliter-Scale Stereolithography Enables High-Resolution 3D Printing of Functional Extraction Sorbents.

Analytical chemistry·2026
Same author

Fluorinated Polymeric Ionic Liquids Enable Selective Preconcentration of Volatile Perfluoroalkyl Substances.

Analytical chemistry·2026
Same author

Nanodomain Formation and Temperature-Dependent Diffusion in Deep Eutectic Solvents Revealed by Single-Molecule Tracking.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Ion-Specific Precipitation of Extractants Enables Rare-Earth Separation and Wastewater Remediation from Solvent Extraction of Critical Elements.

Environmental science & technology·2026
Same author

Itinerant Magnetism in Hydride-Synthesized CaCo<sub>12</sub>B<sub>6</sub>.

Inorganic chemistry·2026
Same author

Professors' "feminine" behavioral cues in the classroom close gender gaps in participation.

Journal of experimental psychology. General·2025
Same journal

Synergistic Impact of Turkey Red Oil and Sodium Oleate on the Separation of Dolomite from Apatite.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Metal Substrate-Dependent Tribological Performance of Environmentally Acceptable Ester-PAO Lubricant Blends.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

From Waste to Water Remediation: Fly Ash-Derived Hectorite for Dye and Heavy Metal Removal.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Mechanism of the Cholesterol-dependent Anchoring and Conformation of LPP-scFv on the PEGylated Liposome Surface.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Visualizing Cooperative Adsorption of an Enzyme Mixture at an Air-Liquid Interface.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Unraveling Nanoplastics-Enzyme Interactions: Physicochemical, Structural, Functional, and Cell Biological Characterization of α-Amylase-Nanoplastics Complexes.

Langmuir : the ACS journal of surfaces and colloids·2026
查看所有相关文章

相关实验视频

Updated: Sep 12, 2025

Preparation of Binary and Ternary Deep Eutectic Systems
06:15

Preparation of Binary and Ternary Deep Eutectic Systems

Published on: October 31, 2019

12.1K

在深层欧性溶剂和欧凝中的温度依赖分子扩散性质.

Hayley P Masching1,2, Nicole M Stephens1,2, Nabeel Mujtaba Abbasi1,2

  • 1Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011-3111, United States.

Langmuir : the ACS journal of surfaces and colloids
|August 6, 2025
PubMed
概括
此摘要是机器生成的。

尽管粘度更高,但欧特基凝 (ETG) 的分子扩散速度比它们的干深欧特基溶剂 (DES) 快. 温度循环导致ETG扩散的不可逆转变化,影响其在应用中的使用.

更多相关视频

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

6.5K
Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
09:50

Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures

Published on: June 28, 2017

8.8K

相关实验视频

Last Updated: Sep 12, 2025

Preparation of Binary and Ternary Deep Eutectic Systems
06:15

Preparation of Binary and Ternary Deep Eutectic Systems

Published on: October 31, 2019

12.1K
In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

6.5K
Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
09:50

Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures

Published on: June 28, 2017

8.8K

科学领域:

  • 材料科学 材料科学 材料科学
  • 物理化学 物理化学
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 乙烯基凝 (ETG) 是由深层乙烯基溶剂 (DES),凝剂和水中提取的多功能材料.
  • 它们在分离,催化和能量储存中的应用严重依赖于温度依赖的分子扩散和分子间相互作用.

研究的目的:

  • 调查Alexa Fluor 633和ATTO 647N在胆化物:2甘油 (甘油) DES和相应的ETG中的温度依赖分子扩散.
  • 评估含水量 (10%和20%w/w) 和温度循环对扩散和材料性能的影响.

主要方法:

  • 光漂白后光恢复 (FRAP) 用于测量从20到100°C的分子扩散系数.
  • 差分扫描热量计 (DSC) 和拉曼光谱法用于分析热性质和分子间相互作用.

主要成果:

  • ETG的分子扩散速度比干燥的DES更快,这归因于它们的多孔,3D结构,尽管粘度更高.
  • 在温度循环后,在ETG中观察到扩散系数的不可逆转下降,与玻璃过渡温度的变化相关.
  • 拉曼数据表明,与温度或水含量的分子间相互作用没有显著变化.

结论:

  • 这项研究阐明了ETG中的粘度,结构和分子扩散之间的复杂相互作用.
  • 结果为ETG的热稳定性和扩散动态提供了关键的见解,这对于优化其在各种应用中的性能至关重要,特别是在周期性温度条件下.