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

Hydrogen Bonds01:04

Hydrogen Bonds

7.7K
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...
7.7K
Introduction to Chemical Bonds01:01

Introduction to Chemical Bonds

7.6K
Chemical Bonds
The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms. The innermost electron shell has a maximum capacity of two electrons, but the next two electron shells can each have a maximum of eight electrons. This is known as the octet rule, which states that, with the exception of the innermost shell, atoms are most stable energetically when they have eight electrons in their valence shell, the...
7.6K
IR Spectrum Peak Broadening: Hydrogen Bonding01:23

IR Spectrum Peak Broadening: Hydrogen Bonding

764
The vibrational frequency of a bond is directly proportional to its bond strength. As a result, stronger bonds vibrate at higher frequencies, while weaker bonds vibrate at lower frequencies. The stretching vibration of the strong O–H bond in alcohols and phenols (very dilute solution or gas phase) appears as a sharp peak at 3600–3650 cm−1.
However, the extent of hydrogen bonding influences the observed stretching frequency and band broadening. Intermolecular or intramolecular...
764
Intermolecular Forces03:13

Intermolecular Forces

56.0K
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...
56.0K
Water: A Bronsted-Lowry Acid and Base02:30

Water: A Bronsted-Lowry Acid and Base

49.1K
The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
 
Base ionization of a species occurs when it accepts protons from water molecules. In the example below, pyridine molecules, C5NH5, undergo base ionization when dissolved in water, yielding hydroxide and pyridinium ions:
49.1K
Bond Polarity, Dipole Moment, and Percent Ionic Character02:48

Bond Polarity, Dipole Moment, and Percent Ionic Character

28.4K
Bond Polarity
28.4K

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

Probing Moiré Excitons in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterobilayers by Combined Micro-photoluminescence and Lateral Force Microscopy.

Nano letters·2026
Same author

Discovery of flat-band 2D materials via physics-informed scoring and structure-based learning.

Science advances·2026
Same author

Molecular Dispersion of Conjugated Polymers via Amine Containing Additives Facilitates Coating and Preserves Solid State Emission.

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

How Water Transfers Proton to Pyrrolo[1,2-<i>a</i>]quinoxalines in the Presence of TNT: A Mechanistic Study and a Possible Method for TNT Detection.

The journal of physical chemistry. B·2026
Same author

Strain-Tunable Electronic and Optical Properties of KSnI<sub>3</sub> Perovskite Polymorphs: From Structural Stability to Optoelectronic Potential.

ACS omega·2026
Same author

Imaging the flat bands of magic-angle graphene reshaped by interactions.

Nature·2026

相关实验视频

Updated: May 13, 2025

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

8.7K

使用可电调的纳米封闭水的量子化结合.

Ziwei Wang1,2, Anupam Bhattacharya3, Mehmet Yagmurcukardes4

  • 1Department of Physics and Astronomy, University of Manchester, Manchester, UK. ziwei.wang@manchester.ac.uk.

Nature communications
|April 15, 2025
PubMed
概括

这项研究将键重新定义为弹性二极体,使其在水系统中精确量化其强度和性质. 这种用石膏验证的新型号为具有可调节结合的先进材料打开了大门.

更多相关视频

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
10:32

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

Published on: January 9, 2014

7.2K
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

26.4K

相关实验视频

Last Updated: May 13, 2025

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

8.7K
Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
10:32

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

Published on: January 9, 2014

7.2K
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

26.4K

科学领域:

  • 材料科学 材料科学 材料科学
  • 物理化学 物理化学
  • 频谱学是一种光谱学.

背景情况:

  • 键是生物学和技术的基础,但很少被理解和量化.
  • 现有的模型未能捕捉到基本的键特性,如强度,定向性和合作性.
  • 这限制了复杂的键材料的预测和设计.

研究的目的:

  • 引入一个新的概念框架,以理解键作为电场中的弹性二极体.
  • 开发一种使用光谱数据量化测量键强度的方法.
  • 探索键异构结构作为新型可调性材料的潜力.

主要方法:

  • 概念化键作为弹性二极体,对电场做出反应.
  • 使用石膏,一种键异构结构,通过应用电场对键强度进行校准.
  • 采用光谱测量,特别是限制水的拉伸振动频率,用于量化.

主要成果:

  • 弹性双极模型成功地解释了水系中的各种结现象.
  • 通过光谱测量量定量确定了键强度.
  • 该模型准确地重现了受限水的关键性质,包括O-H键的长度和二极极矩.

结论:

  • 弹性双极概念为量化键提供了一个强大的框架.
  • 键异构结构代表了一种具有增强结合性质的新类可调性材料.
  • 这些材料有望用于催化,分离和能量储存的应用.