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

Electrochemical Systems01:24

Electrochemical Systems

46
Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution,...
46
Carrier Generation and Recombination01:22

Carrier Generation and Recombination

1.4K
Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
1.4K
The Electrical Double Layer01:30

The Electrical Double Layer

90
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...
90
Debye–Huckel–Onsager Conductance Equation01:28

Debye–Huckel–Onsager Conductance Equation

61
The Debye-Hückel-Onsager equation is a cornerstone of physical chemistry, providing a method to determine the molar conductance (Λm) and molar conductance at infinite dilution (Λ°m) for uni-univalent electrolytes.Uni-univalent electrolytes are electrolytes that dissociate in solution to produce one cation with a +1 charge and one anion with a –1 charge per formula unit.This equation addresses two crucial phenomena: the asymmetry effect and the electrophoretic effect.
61
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

1.0K
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
1.0K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.4K
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
2.4K

You might also read

Related Articles

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

Sort by
Same author

Solvated Electron Generation from Coupled Plasmon Modes of Gold Nanoparticles Using Visible Light.

Nano letters·2026
Same author

Flattening Energy Puddles for Enhanced Charge Transport in Wrinkled WSe<sub>2</sub>.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

High-Performance P-type Tellurium Field-Effect Transistors by Lignin-Induced Doping.

ACS applied materials & interfaces·2025
Same author

Tailored Xenogeneic-Free Polymer Surface Promotes Dynamic Migration of Intestinal Stem Cells.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Nanoscale Epigenetic Profiling of Colorectal Cancer Cell-Derived Exosomes via Single-Vesicle Nanoscopy.

Small methods·2025
Same author

Passivation of Indium Selenide: Suppressing Polymer-Induced Doping through Redox Activation.

ACS applied materials & interfaces·2025

Related Experiment Video

Updated: Mar 12, 2026

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
11:30

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

12.3K

Interpretation of Photogenerated Charge Carrier Transfer Dynamics Using Interactive Surface-Molecular System.

Jaekak Yoo1, Sunho Joh2, Mun Seok Jeong3

  • 1Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.

ACS Applied Materials & Interfaces
|March 11, 2026
PubMed
Summary

Reactive hydroxyl radicals and protons drive photocatalytic reactions by extracting electrons and protonating analytes, enhancing laser-induced desorption and ionization on catalyst surfaces.

Keywords:
charge transferdensity functional theorygermanium monochalcogenideslaser desorption/ionization mass spectrometryphotocatalysis

More Related Videos

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

6.1K
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

9.6K

Related Experiment Videos

Last Updated: Mar 12, 2026

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
11:30

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

12.3K
Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

6.1K
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

9.6K

Area of Science:

  • Surface Science
  • Photocatalysis
  • Chemical Physics

Background:

  • Understanding charge transfer mechanisms is crucial for optimizing photoinduced catalytic reactions.
  • Laser-induced desorption and ionization are key processes in analyzing surface-molecular interactions.
  • Physicochemical interactions at the photocatalyst surface dictate reaction efficiency.

Purpose of the Study:

  • To investigate the charge transfer dynamics at the surface-molecular interface during photoinduced catalytic reactions.
  • To elucidate the roles of reactive hydroxyl radicals and protons in laser-induced desorption and ionization.
  • To establish criteria for designing efficient photocatalytic surfaces and molecular targets.

Main Methods:

  • Utilized a laser-induced desorption and ionization environment.
  • Performed integrated theoretical and experimental analyses.
  • Analyzed physicochemical interactions, interatomic charge transfer, and adsorbed molecule behavior.

Main Results:

  • Reactive hydroxyl radicals rapidly extract electrons from the surface, while protons protonate analytes.
  • This synergistic interplay accelerates charge redistribution and enhances Coulombic repulsion, governing ionization and desorption efficiency.
  • Localized protonation at electrophilic sites enhances analyte desorption, influenced by molecular orbital localization and surface electronic properties.

Conclusions:

  • Protonation and electron transfer dynamics are critical for efficient laser-induced desorption and ionization.
  • Surface electronic properties, such as conduction-band energy and charge localization, significantly impact catalytic efficiency.
  • Findings provide fundamental insights for designing advanced photocatalytic materials and optimizing laser-induced applications.