Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Deactivation Processes: Jablonski Diagram01:25

Deactivation Processes: Jablonski Diagram

974
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
974
Mass Spectrometry: Molecular Fragmentation Overview01:20

Mass Spectrometry: Molecular Fragmentation Overview

3.9K
The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can...
3.9K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

43.0K
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. 
43.0K
SN1 Reaction: Mechanism02:25

SN1 Reaction: Mechanism

12.4K
Kinetic studies of ionization of a tertiary halide in a protic solvent suggest that only the substrate participates in the rate-determining step (slow step). The nucleophile is involved only after the slowest step. The SN1 reaction takes place in a multiple-step mechanism. 
Firstly, the haloalkane ionizes to generate a carbocation intermediate and a halide ion. This heterolytic cleavage is highly endothermic with large activation energy. The ionization of the substrate, facilitated by a...
12.4K
Formation of Complex Ions03:45

Formation of Complex Ions

24.1K
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...
24.1K
Mass Spectrometry: Carboxylic Acid, Ester, and Amide Fragmentation01:01

Mass Spectrometry: Carboxylic Acid, Ester, and Amide Fragmentation

1.7K
The fragmentation patterns observed for compounds such as carboxylic acids, esters, and amides in the mass spectra include ⍺-cleavage and McLafferty rearrangement. Fragmentation by ⍺-cleavage preferentially occurs at the carbon-carbon bond at the ⍺-position next to the carboxylic group to generate a neutral radical and a cation. Long chain compounds with hydrogen at their γ-carbon undergo McLafferty rearrangement to give a radical cation and a neutral alkene.
For example,...
1.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Vibrational Quenching of Optically Pumped Carbon Dimer Anions.

Physical review letters·2023
Same author

Three-Body Collisions Driving the Ion-Molecule Reaction C<sub>2</sub><sup>-</sup> + H<sub>2</sub> at Low Temperatures.

The journal of physical chemistry. A·2023
Same author

Tunnelling measured in a very slow ion-molecule reaction.

Nature·2023
Same author

Associative detachment in anion-atom reactions involving a dipole-bound electron.

Nature communications·2022
Same author

Complex Formation in Three-Body Reactions of Cl<sup>-</sup> with H<sub>2</sub>.

The journal of physical chemistry. A·2021
Same author

Influence of a Supercritical Electric Dipole Moment on the Photodetachment of C_{3}N^{-}.

Physical review letters·2021
Same journal

The influence of chirality on the macroscopic behavior of multiferroic smectic phases.

The Journal of chemical physics·2026
Same journal

Polaron transformed canonically consistent quantum master equation.

The Journal of chemical physics·2026
Same journal

The x-ray absorption spectrum of the propargyl radical C3H3●.

The Journal of chemical physics·2026
Same journal

Transient hydroperoxyalkyl intermediates (•QOOH) in isopentane oxidation. I. Conformer- and isomer-resolved infrared spectra.

The Journal of chemical physics·2026
Same journal

Transient hydroperoxyalkyl intermediates (•QOOH) in isopentane oxidation. II. Isomer-resolved unimolecular dynamics.

The Journal of chemical physics·2026
Same journal

Quantum state-to-state dynamics studies of the C(3P) + OH(X2Π) → CO(a3Π) + H(2S) reaction based on a new HCO(12A″) potential energy surface.

The Journal of chemical physics·2026
See all related articles

Related Experiment Video

Updated: Oct 1, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

8.8K

Quantum state-dependent anion-neutral detachment processes.

Saba Zia Hassan1, Jonas Tauch1, Milaim Kas2

  • 1Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany.

The Journal of Chemical Physics
|March 9, 2022
PubMed
Summary
This summary is machine-generated.

Researchers explored rubidium atom (Rb) and oxygen anion (O-) interactions in a hybrid trap. Excited Rb atoms increased loss rates, suggesting potential for anion sympathetic cooling with ground-state Rb.

More Related Videos

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
08:22

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Published on: August 6, 2018

7.0K
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

2.4K

Related Experiment Videos

Last Updated: Oct 1, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

8.8K
Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
08:22

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Published on: August 6, 2018

7.0K
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

2.4K

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Quantum Chemistry
  • Chemical Physics

Background:

  • Understanding atom-ion interactions is crucial for quantum technologies.
  • Controlling quantum states of neutral atoms and ions enables novel reaction dynamics studies.
  • Sympathetic cooling of ions using neutral atom buffer gases is a promising technique.

Purpose of the Study:

  • Investigate detachment loss dynamics between rubidium atoms (Rb) and oxygen anions (O-).
  • Control Rb electronic quantum states to tune anion-neutral interaction dynamics.
  • Assess the potential for sympathetic cooling of O- anions using Rb buffer gas.

Main Methods:

  • Utilized a hybrid atom-ion trap setup.
  • Actively controlled the excitation level of rubidium atoms.
  • Analyzed detachment-induced loss rates.
  • Interpreted results using ab initio potential energy curves.

Main Results:

  • Ground-state Rb interacting with O- showed a near-zero detachment loss rate.
  • Excited-state Rb interacting with O- exhibited a significantly higher loss rate.
  • Observed differences in loss dynamics compared to the Rb-OH- system.

Conclusions:

  • The Rb-O- system, with minimal loss channels for ground-state Rb, is a viable platform for sympathetic cooling.
  • Excited-state Rb promotes loss, highlighting the importance of quantum state control.
  • Findings provide insights into anion-neutral interactions and sympathetic cooling mechanisms.