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

Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

41.1K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
41.1K
Valence Bond Theory02:42

Valence Bond Theory

8.4K
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...
8.4K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

214
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
214
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

25.9K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
25.9K
Formation of Complex Ions03:45

Formation of Complex Ions

23.1K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.1K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

40.5K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
40.5K

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

Magnetically Recoverable ICT-Functionalized Fe<sub>3</sub>O<sub>4</sub> Nanoparticles for Efficient Horseradish Peroxidase Immobilization.

Molecules (Basel, Switzerland)·2026
Same author

Application of TiO<sub>2</sub> in Photocatalytic Bacterial Inactivation: Review.

International journal of molecular sciences·2025
Same author

Cr(I)-Cr(I) Terphenyl Bridged Complexes: A Broken-Symmetry DFT and Multideterminant CASSCF/NEVPT2 Handshake.

ACS omega·2025
Same author

A New Route to Tune the Electrical Properties of Graphene Oxide: A Simultaneous, One-Step N-Doping and Reduction as a Tool for Its Structural Transformation.

Molecules (Basel, Switzerland)·2025
Same author

Bioactivity Assessment of Functionalized TiO<sub>2</sub> Powder with Dihydroquercetin.

International journal of molecular sciences·2025
Same author

Study of Graphene Oxide and Silver Nanowires Interactions and Its Association with Electromagnetic Shielding Effectiveness.

International journal of molecular sciences·2025

相关实验视频

Updated: May 23, 2025

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
11:47

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance

Published on: July 4, 2017

13.3K

探索TiO2和黄之间的新型界面电荷转移复合体:理论研究

Dušan N Sredojević1, Miriama Malček Šimunková2, Đorđe Trpkov1

  • 1Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Centre of Excellence for Photoconversion, Belgrade, Serbia.

Chemphyschem : a European journal of chemical physics and physical chemistry
|March 10, 2025
PubMed
概括

这项研究探讨了使用黄类化合物作为配体,以创建具有改善光吸收的新型二氧化 (TiO2) 材料. 这些新的基于二氧化的复合物显示出增强的抗氧化特性,使它们对各种应用具有前景.

关键词:
在 DFT 方面,它是最重要的.黄类化合物 黄类化合物信息和通信技术综合体激进的清理扫地工作二氧化是什么? 二氧化是什么?

更多相关视频

Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
16:11

Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry

Published on: June 8, 2022

2.2K
A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery
09:49

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

10.4K

相关实验视频

Last Updated: May 23, 2025

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
11:47

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance

Published on: July 4, 2017

13.3K
Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
16:11

Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry

Published on: June 8, 2022

2.2K
A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery
09:49

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

10.4K

科学领域:

  • 材料科学 材料科学 材料科学
  • 计算化学的计算化学
  • 量子化学 是一个量子化学.

背景情况:

  • 二氧化 (TiO2) 材料的光谱特性有限.
  • 接口电荷传输 (ICT) 综合体提供了一条改善材料性能的途径.
  • 黄酸是具有已知的抗氧化作用的天然化合物.

研究的目的:

  • 调查六种不同类型的黄素作为配体的潜力,以创建基于TiO2的新型ICT复合体.
  • 通过计算来评估这些新复合物的稳定性和光谱特性.
  • 为了评估合成的TiO2-flavonoid复合物的抗氧化潜力.

主要方法:

  • 使用密度函数理论 (DFT) 的计算.
  • 巴德的分子中的原子量子理论 (QTAIM) 分析证实了协调.
  • 热化学计算评估了激素清除潜力.

主要成果:

  • 在TiO2和黄类药物之间确认了稳定的双酸 Ti-O 协调.
  • 计算的ICT综合体的频段间隙在1.95-2.15 eV之间,明显低于原始TiO2 (3.20 eV).
  • 具有OH组在C环的位置3的黄类化合物 (myricetin,quercetin) 产生了最小的带间隙,使可见光吸收.
  • 形成的ICT复合体与母类黄类药物相比,具有更强的激素清除潜力.

结论:

  • 基于TiO2的ICT复合物与黄化合物合成,表现出改善的光谱特性,使可见光吸收.
  • 这些新型复合物与原始黄类药物相比,具有更高的抗氧化能力.
  • 这些发现表明这些增强的TiO2-flavonoid材料的潜在应用.