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相关概念视频

Radical Formation: Homolysis00:54

Radical Formation: Homolysis

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A bond is formed between two atoms by sharing two electrons. When this bond is broken by supplying sufficient energy, either two electrons can be taken up by one atom forming ions by the cleavage called heterolysis, or the two electrons are shared by two atoms, with one each creating radicals by the cleavage called homolysis.
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Emission Spectra02:39

Emission Spectra

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When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
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Hydrogen Bonds00:26

Hydrogen Bonds

129.5K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
129.5K
Hydrogen Bonds01:04

Hydrogen Bonds

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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...
12.9K
Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

4.3K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels.  Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
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Molecular Orbital Theory II03:51

Molecular Orbital Theory II

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Molecular Orbital Energy Diagrams
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相关实验视频

Updated: Jan 6, 2026

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
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Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

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由量子光驱动的分子解离.

Xiaoxiao Long1, Peizeng Li1, Yunquan Liu1,2

  • 1Peking University, State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-Optoelectronics, School of Physics, Beijing 100871, China.

Physical review letters
|October 25, 2025
PubMed
概括

我们使用量子压缩光来控制分子离子解离. 光子波动精确调整了分子动力学和解离路径,显示了量子光.

科学领域:

  • 量子光学就是量子光学.
  • 物理化学 物理化学
  • 分子动力学分子动力学

背景情况:

  • 研究分子解离动力学对于理解化学反应至关重要.
  • 非经典光源为探测和控制量子现象提供了新的途径.

研究的目的:

  • 用量身定制的量子光来探索分子离子的解离动态.
  • 了解光子量子波动如何影响分子碎片化.

主要方法:

  • 解决分子系统的依赖时间的施罗丁格方程.
  • 使用由连贯和量子压缩光组成的驱动场.
  • 分析动能释放光谱和解离通道产量.

主要成果:

  • 压缩光中的量子波动显著影响动能释放光谱.
  • 特定的分离途径可以通过光子统计和相位不确定性选择性增强或抑制.
  • 观察到竞争分离通道之间的相对收益率的调制.

结论:

  • 量子光作为一种可调节的资源来操纵分子动力学.
  • 这些发现表明了超快化学中量子增强相互作用的潜力.

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  • 这项研究为用量子光控制化学过程开辟了新的途径.