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

Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

62.7K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
62.7K
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

390
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
390
Valence Bond Theory02:42

Valence Bond Theory

10.1K
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...
10.1K
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

3.1K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
3.1K
Interaction of EM Radiation with Matter: Spectroscopy01:12

Interaction of EM Radiation with Matter: Spectroscopy

2.7K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
2.7K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

839
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
839

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

Purification of Actinium-225 from Thorium via Selective Precipitation.

Molecules (Basel, Switzerland)·2026
Same author

Nanodiamond Sensing of the Transmetalation Kinetics of Gd-DTPA in Individual Levitated Microdroplets.

The journal of physical chemistry. B·2026
Same author

Oxidative Stability and Redox Coupling in 3,4,3-LI(1,2-HOPO) <i>f</i>‑Element Complexes under Acidic Conditions.

ACS electrochemistry·2026
Same author

Quantifying Outer- and Inner-Coordination Sphere Effects Using Uranium Redox Chemistry in Molten Salt Solutions.

Journal of the American Chemical Society·2026
Same author

Spectroscopic Characterization of Tetravalent Berkelium.

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

Combining coordination and chelation moieties to engineer a new linker for lanthanide coordination chemistry.

Dalton transactions (Cambridge, England : 2003)·2025

相关实验视频

Updated: Nov 18, 2025

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
07:24

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

18.0K

爱因斯坦复合物的结构和光谱特征

Korey P Carter1, Katherine M Shield1,2, Kurt F Smith1

  • 1Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

Nature
|February 4, 2021
PubMed
概括

研究人员使用先进的光谱学特征化了爱因斯坦 (Es) 协调复合体. 这项研究揭示了这种罕见的放射性转元素的独特电子结构和发光特性.

更多相关视频

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization
07:50

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

11.4K
Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.2K

相关实验视频

Last Updated: Nov 18, 2025

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
07:24

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

18.0K
Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization
07:50

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

11.4K
Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.2K

科学领域:

  • 核化学
  • 材料科学
  • 光谱学

背景情况:

  • 转元素 (原子号95-103) 由于其在周期表边缘的位置,具有独特的化学和物理特性.
  • 像爱因斯坦 (Es) 这样的重元素的稀缺性和放射性限制了经典研究.
  • 对于过渡金属和化物,传统的预测模型对转元素不太适用.

研究的目的:

  • 使用最小的样本量来描述爱因斯坦 (Es) 的协调复合物.
  • 研究爱因斯坦的电子结构和发光.
  • 了解重型动态元素中的结合和合模式.

主要方法:

  • 用X射线吸收光谱 (XAS) 来确定L3边缘能量和键距离.
  • 分析发光和金属复合效应的光物理测量.
  • 使用<200纳米的254Es,合成和表征与氧联体的爱因斯坦协调复合物.

主要成果:

  • 确定了L3边缘能量和爱因斯坦金属键距离.
  • 观察到EsIII发光的天线敏感性.
  • 报告了金属复合的低色变化,
  • 提供了中间旋转轨道合方案的证据, 偏爱j-j合而不是拉塞尔-桑德斯合.

结论:

  • 这项研究为爱因斯坦的电子结构和结合提供了关键的见解.
  • 这些发现突显了重型动态化合物中j-j合的普遍性,与较轻的类似物不同.
  • 强调需要继续研究稀缺和放射性活性元素的独特行为.