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

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

3.1K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
3.1K
Electron Transport Chains01:28

Electron Transport Chains

113.6K
The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...
113.6K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.3K
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
2.3K
Deactivation Processes: Jablonski Diagram01:25

Deactivation Processes: Jablonski Diagram

1.9K
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...
1.9K
Electron Behavior00:54

Electron Behavior

110.1K
Overview
Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the...
110.1K
Electron Transport Chain: Complex III and IV01:43

Electron Transport Chain: Complex III and IV

9.4K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
9.4K

You might also read

Related Articles

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

Sort by
Same author

Guest Editorial: David Jonas Festschrift.

The Journal of chemical physics·2026
Same author

Isotope effects in 2D correlation infrared spectra of water: HEOM analysis of molecular dynamics-based machine learning models.

The Journal of chemical physics·2026
Same author

HEOM-based numerical framework for quantum simulation of two-dimensional vibrational spectra in molecular liquids (HEOM-2DVS).

The Journal of chemical physics·2026
Same author

sbml4md: A computational platform for system-bath modeling via molecular dynamics powered by machine learning.

The Journal of chemical physics·2026
Same author

AO-HEOM: A computational platform for non-Markovian quantum dissipative dynamics in atomic orbital spaces.

The Journal of chemical physics·2026
Same author

Quantum hierarchical Fokker-Planck equations with U(1) gauge fields [U(1)-QHFPE]: A computational framework for Aharonov-Bohm effects.

The Journal of chemical physics·2025

Related Experiment Video

Updated: Feb 20, 2026

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting
08:40

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting

Published on: February 14, 2019

8.8K

Exciton-Coupled Electron Transfer Process Controlled by Non-Markovian Environments.

Souichi Sakamoto1, Yoshitaka Tanimura1

  • 1Department of Chemistry, Graduate School of Science, Kyoto University , Sakyoku, Kyoto 606-8502, Japan.

The Journal of Physical Chemistry Letters
|October 18, 2017
PubMed
Summary

We developed a theoretical model for exciton-coupled electron transfer (XCET), crucial for solar energy. Suppressing coherence between exciton transfer and electron transfer is key for efficient XCET.

More Related Videos

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

9.0K
Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors
10:44

Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

Published on: January 31, 2025

1.4K

Related Experiment Videos

Last Updated: Feb 20, 2026

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting
08:40

Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting

Published on: February 14, 2019

8.8K
Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

9.0K
Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors
10:44

Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

Published on: January 31, 2025

1.4K

Area of Science:

  • Physical Chemistry
  • Quantum Mechanics
  • Materials Science

Background:

  • Exciton-coupled electron transfer (XCET) is vital for solar energy conversion in biological and photovoltaic systems.
  • Understanding the efficiency of XCET requires theoretical models that account for complex environmental interactions.

Purpose of the Study:

  • To develop a theoretical model for investigating the efficiency of the exciton-coupled electron transfer (XCET) process.
  • To analyze the influence of non-Markovian baths on consecutive and concerted XCET processes.
  • To explore the role of quantum coherence in XCET and its constituent exciton transfer (XT) and electron transfer (ET) processes.

Main Methods:

  • Development of a practical theoretical model for XCET.
  • Utilizing reduced hierarchal equations of motion (HEOM) to study quantum coherence.
  • Incorporating independent baths for XT, ET, and XCET processes, alongside a dedicated XCET bath.

Main Results:

  • Quantum system-bath coherence significantly impacts XT and ET processes.
  • Suppression of coherence between XT and ET processes is essential for efficient, irreversible XCET.
  • Weak off-diagonal interactions between XT and ET bridge sites, driven by the XCET bath, facilitate efficient irreversible XCET.

Conclusions:

  • The developed theoretical model provides insights into optimizing XCET efficiency.
  • Controlling quantum coherence is a critical factor in designing efficient solar energy harvesting materials.
  • Non-Markovian bath effects and specific coherence suppression strategies are crucial for maximizing XCET performance.