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

Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

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,...
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

You might also read

Related Articles

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

Sort by
Same author

Mild and Selective Oxidation of 4-Alkylpyridines to 4-Acylpyridines under an Oxygen Atmosphere.

The Journal of organic chemistry·2026
Same author

Implications from Geometric Phase for Circulating Far Away Conical Intersection(s).

The journal of physical chemistry. A·2026
Same author

A Cell-Resolved Ultrastable Biosensor Enables One-Step Detection of Gene-Fusion Transcripts in Unprocessed Whole Blood.

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

Quantum Seniority-Based Subspace Expansion: Linear Combinations of Short-Circuit Unitary Transformations for the Electronic Structure Problem.

Journal of chemical theory and computation·2026
Same author

On the Feasibility of Exact Unitary Transformations for Many-Body Hamiltonians.

Journal of chemical theory and computation·2026
Same author

Selenol-containing two-dimensional perovskite promotes visible-light-driven selective reduction of unsaturated ketones.

Chemical science·2026
Same journal

High Pressure Synthesis of Ultrasmall Nanodiamonds with Nitrogen Vacancy Centers.

Nano letters·2026
Same journal

Efros-Shklovskii Law at the Thinnest Limit of a Material.

Nano letters·2026
Same journal

Oxygen Electronic Configuration Modulation Triggering Reversible Anionic Redox Chemistry toward High Voltage Tolerant Sodium Layered Oxide.

Nano letters·2026
Same journal

Development of a Nanoscale Protein-Protein Mapping of PDE4 Interface-Disrupting Peptides.

Nano letters·2026
Same journal

Lubricin-Protected Plasmonic Nanoslides Enable Stable, Reusable, Nonfouling, and Ultrasensitive Biomimetic-SERS Sensing for the Detection of Vancomycin in Unprocessed Whole Blood.

Nano letters·2026
Same journal

Forcing a Molecule to Switch: Quantifying Mechanical Control at the Atomic Scale.

Nano letters·2026
See all related articles

Related Experiment Video

Updated: Jun 15, 2026

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping
09:32

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Published on: July 2, 2012

18.8K

Photoinduced Long-Distance Charge Transfer in Silicanes: The Stacking Matters.

Guoying Yao1,2, Ekadashi Pradhan2, Zhenyu Yang1

  • 1MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China.

Nano Letters
|January 13, 2025
PubMed
Summary
This summary is machine-generated.

Researchers explored charge transfer in stacked silicanes (SiH) using a new orbital concept. Certain stackings show efficient charge transfer, offering a way to tune optoelectronic properties of 2D materials.

Keywords:
homostackinglong-distance interlayer charge transfertwo-dimensional materialsvan der Waals crystal

More Related Videos

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
08:48

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Published on: November 9, 2015

8.2K
Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing
08:45

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing

Published on: November 9, 2015

7.8K

Related Experiment Videos

Last Updated: Jun 15, 2026

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping
09:32

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Published on: July 2, 2012

18.8K
Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
08:48

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Published on: November 9, 2015

8.2K
Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing
08:45

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing

Published on: November 9, 2015

7.8K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Interlayer charge transfer excitons are crucial for van der Waals stacked 2D materials.
  • Understanding excited states in solids is key to designing new materials.

Purpose of the Study:

  • Investigate photoinduced charge transfer in silicanes (SiH) with different stackings.
  • Develop a method to characterize excited states and bonding in solids.
  • Explore stacking-dependent optoelectronic properties of 2D silicanes.

Main Methods:

  • Developed a concept of regional natural hole and conjugated particle orbitals.
  • Analyzed excited states and interlayer orbital overlap in SiH.
  • Simulated charge transfer under violet and near-UV radiation for different SiH stackings.

Main Results:

  • Silicanes (SiH) in 1H and 6R stackings exhibit significant interlayer charge transfer (∼10 Å).
  • Charge transfer is linked to interlayer orbital overlap at the conduction band minimum.
  • 3R stacking disfavors this interlayer orbital overlap and charge transfer.

Conclusions:

  • The regional natural orbital concept provides bonding insights into excited states.
  • Stacking engineering in SiH offers a tunable route for optoelectronic properties.
  • This approach is applicable to other Group 14 2D materials.