Related Experiment Video
Updated: Jul 12, 2026
10:37
Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Adsorption of polar molecules on krypton clusters
A Rosso1, W Pokapanich, G Ohrwall
1Department of Physics, Uppsala University, P.O. Box 530, S-75121 Uppsala, Sweden. aldana.rosso@maxlab.lu.se
The Journal of Chemical Physics
|September 4, 2007
Summary
This study used synchrotron-based photoelectron spectroscopy to investigate binary clusters. Results show chloromethane molecules predominantly reside on the surface of krypton clusters, revealing insights into cluster formation.
Area of Science:
- Physical Chemistry
- Atomic and Molecular Physics
- Surface Science
Background:
- Binary clusters are crucial in understanding chemical reactions and material properties.
- Investigating the structure of doped clusters provides insights into intermolecular forces.
- Synchrotron-based spectroscopy offers high-resolution analysis of electronic structure.
Purpose of the Study:
- To determine the formation process and geometric structure of chloromethane-krypton binary clusters.
- To elucidate the location of chloromethane molecules within krypton clusters.
- To utilize core-level photoelectron spectroscopy for detailed cluster analysis.
Main Methods:
- Production of free neutral krypton clusters via adiabatic expansion.
- Doping of krypton clusters with chloromethane molecules using the pickup technique.
- Analysis of core-level photoelectron spectra, comparing pure krypton and doped clusters.
Main Results:
- Most chloromethane molecules were found to remain on the surface of the krypton clusters.
- Differences in integrated intensities, linewidths, and level shifts provided geometric information.
- The study successfully characterized the surface-dominated doping of krypton clusters.
Conclusions:
- Chloromethane molecules preferentially adsorb on the surface of krypton clusters.
- The surface-bound nature influences the overall cluster geometry and properties.
- Synchrotron-based photoelectron spectroscopy is a powerful tool for studying binary cluster formation and structure.
More Related Videos
Related Concept Videos
03:13Intermolecular Forces
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
03:37Molecular Shape and Polarity
Dipole Moment of a Molecule
01:28Adsorption of Gases on Solids
Adsorption is a process where molecules, known as the adsorbates, accumulate on a surface, which is referred to as the adsorbent or substrate. Occurring at the solid-gas interface, this phenomenon is crucial in various scientific and industrial contexts. The reverse of adsorption is desorption.Two types of adsorptions exist: physical (physisorption) and chemical (chemisorption). Physisorption involves gas molecules held to the solid's surface by relatively weak intermolecular van der Waals...
01:09Analyte Adsorption and Distribution
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and solvents...
01:24Van der Waals Interactions
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.Polar molecules have a partial positive charge on one end and a partial negative charge on the other end of the molecule,...
02:42Aqueous Solutions and Heats of Hydration
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...