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

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

10.0K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
10.0K
Valence Bond Theory02:42

Valence Bond Theory

9.7K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
9.7K
Network Covalent Solids02:18

Network Covalent Solids

14.7K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
14.7K
2D NMR: Overview of Heteronuclear Correlation Techniques01:18

2D NMR: Overview of Heteronuclear Correlation Techniques

324
Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other...
324
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

967
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
967
Crown Ethers02:36

Crown Ethers

5.4K
Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether...
5.4K

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

Safety and hemodynamic efficacy of the LVIS stent in the endovascular treatment of intracranial wide-necked aneurysms: a single-center retrospective study.

Chinese neurosurgical journal·2026
Same author

Stability analysis of the primary reflector of the 500 mm aperture ultra-lightweight millimeter wave satellite antenna for observing solar flare.

Scientific reports·2026
Same author

Cunninghamia lanceolata genome illuminates the evolutionary dynamics of gymnosperms.

Cell reports·2026
Same author

Lamellar-Paracrystallinity-Controlled Thermal Transport in Polymer Semiconductors.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Psychological depression and its association with oocyte yield and embryo outcomes in infertile women undergoing <i>in vitro</i> fertilization-embryo transfer.

Frontiers in psychiatry·2026
Same author

Synergistic physical confinement and chemical adsorption in yolk-Shell Ni@NC nanoreactors for enhanced photothermal CO<sub>2</sub> methanation.

Journal of colloid and interface science·2026
Same journal

Selective Degradation of Polyurethanes in Mixed Plastic Wastes via Ir-Catalyzed Hydrogenolysis.

Angewandte Chemie (International ed. in English)·2026
Same journal

Covalent Organic Framework Photocatalysts: Decoding Linkage Chemistry in Hydrogen Peroxide Synthesis From Air and Water.

Angewandte Chemie (International ed. in English)·2026
Same journal

Anomeric Amide Enabled Divergent Synthesis of Unsymmetrical Ureas, Carbamates, Thioesters, and Amides From Aldehydes.

Angewandte Chemie (International ed. in English)·2026
Same journal

Anisotropic Magneto-Chiral Dichroism in Lanthanide Complexes.

Angewandte Chemie (International ed. in English)·2026
Same journal

Engineering LE-CT State Synergy in Aminoboranes for Single Molecule White Light Emission and Dual-Mode Chiroptical/Phosphorescence Output.

Angewandte Chemie (International ed. in English)·2026
Same journal

Editable Hydrogen Bond Network Within the Electric Double Layer for CO<sub>2</sub> Reduction.

Angewandte Chemie (International ed. in English)·2026
查看所有相关文章

相关实验视频

Updated: Sep 19, 2025

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.7K

在内部使用BN-Doped的冠.

Jing-Cai Zeng1, Xuan-Yu Song1, Ze-Fan Yao1

  • 1Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China.

Angewandte Chemie (International ed. in English)
|June 16, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了和添加剂的新型冠状烯,揭示了独特的电子和光物理性质. 这些BN-doped材料表现出增强的π-π堆叠和有序组装,导致排泄物排放.

关键词:
其他BN化合物.冠状元是一种冠状元.二极管二极管是什么意思 二极管二极管是什么意思一个排斥者 Excimer.有机半导体有机半导体

更多相关视频

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
13:51

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

Published on: November 10, 2017

15.5K
Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
13:09

Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis

Published on: January 6, 2016

15.0K

相关实验视频

Last Updated: Sep 19, 2025

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.7K
Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
13:51

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

Published on: November 10, 2017

15.5K
Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
13:09

Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis

Published on: January 6, 2016

15.0K

科学领域:

  • 有机化学 有机化学
  • 材料科学 材料科学 材料科学
  • 超分子化学 超分子化学

背景情况:

  • 冠烯是具有有趣电子特性的多环芳化合物.
  • 调整有机半导体的电子和光物理性质对于先进的应用至关重要.
  • 异原子的共价结合为修改分子结构和功能提供了一条途径.

研究的目的:

  • 为了合成和表征内部和配合的冠烯 (B2N2-C,H-B2N2-C和2H-B2N2-C).
  • 研究B─N兴奋剂对电子结构,电荷分布,结合,芳香度和光物理性质的影响.
  • 探索这些新型BN-doped冠状体的自我组装行为和固态特性.

主要方法:

  • 化学合成的BN-化冠衍生物.
  • 单晶X射线衍射用于结构阐明.
  • 光谱技术 (UV-Vis吸收,光) 用于研究光物理性质.
  • 固态表征用于分析电子合和带隙.

主要成果:

  • 成功合成了与共价B─N单元的内部BN-化冠状蛋白.
  • 尼泊尔抗氧化剂诱导独特的电子结构,改变的电荷分布,和修改的芳香度.
  • 与冠烯相比,B2N2-C显示了增强的π-π堆叠,更高的电子合,以及更窄的固态带隙.
  • 所有的BN-冠衍生物都表现出有序的组装和溶液相排放因B─N双极-双极相互作用而导致的排放.
  • 在2H-B2N2-C单晶中观察到两种不同的多态 (棒和板相),可通过加工条件控制.

结论:

  • 内部BN兴奋剂是一种有效的策略,可以调整冠框架的电子和光物理特性.
  • B─N双极-双极相互作用显著影响分子组装和固态包装.
  • 在BN-doped冠状蛋白中出现可控制的多态体,为量身定制的材料设计和加工提供了可能性.