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

Electron Transport Chain: Complex III and IV01:43

Electron Transport Chain: Complex III and IV

6.7K
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...
6.7K
Electron Transport Chain Components01:29

Electron Transport Chain Components

1.2K
The electron transport chain (ETC) is a crucial metabolic pathway that facilitates energy conversion in prokaryotic and eukaryotic cells. In eukaryotes, the ETC comprises four membrane-associated protein complexes in the inner mitochondrial membrane. In prokaryotes, the ETC in the plasma membrane can vary in composition, with fewer or different complexes depending on the organism and environmental conditions. These complexes transfer electrons from electron donors, such as NADH and FADH2, to...
1.2K
The Electron Transport Chain01:30

The Electron Transport Chain

13.8K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
13.8K
Electron Transport Chains01:28

Electron Transport Chains

85.5K
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...
85.5K
The Electrical Double Layer01:30

The Electrical Double Layer

241
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...
241
Ion Exchange01:17

Ion Exchange

1.6K
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
1.6K

You might also read

Related Articles

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

Sort by
Same author

Photon Upconversion in a Glowing Metal-Organic Framework.

Journal of the American Chemical Society·2021
Same author

Single-Molecule Charge Transport through Positively Charged Electrostatic Anchors.

Journal of the American Chemical Society·2021
Same author

Radical-Pairing Interactions in a Molecular Switch Evidenced by Ion Mobility Spectrometry and Infrared Ion Spectroscopy.

Angewandte Chemie (International ed. in English)·2021
Same author

Cyclodextrin Metal-Organic Frameworks and Their Applications.

Accounts of chemical research·2021
Same author

A Diverse View of Science to Catalyse Change.

Angewandte Chemie (International ed. in English)·2021
Same author

François N. Diederich: Pioneer of carbon allotropes and molecular recognition.

Proceedings of the National Academy of Sciences of the United States of America·2020

Related Experiment Video

Updated: Apr 29, 2026

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

Electron transfer and multi-electron accumulation in ExBox⁴⁺.

Scott M Dyar1, Jonathan C Barnes, Michal Juríček

  • 1Department of Chemistry, Northwestern University (USA).

Angewandte Chemie (International Ed. in English)
|May 16, 2014
PubMed
Summary

Artificial photosynthesis relies on molecules that store multiple electrons. Researchers studied ExBox(4+), revealing a new through-bond electron transfer pathway crucial for catalytic applications like hydrogen production.

Keywords:
ExBoxcyclophaneselectron transferfemtochemistryphotochemistry

More Related Videos

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
10:23

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System

Published on: August 23, 2024

2.1K
Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
09:00

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

9.3K

Related Experiment Videos

Last Updated: Apr 29, 2026

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
Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
10:23

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System

Published on: August 23, 2024

2.1K
Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
09:00

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

9.3K

Area of Science:

  • Supramolecular Chemistry
  • Photochemistry
  • Materials Science

Background:

  • Molecules storing multiple electrons are vital for artificial photosynthesis.
  • ExBox(4+) previously accepted electrons via photoexcited guests through space.
  • Understanding electron transfer pathways is key for catalyst development.

Purpose of the Study:

  • To investigate the through-bond intramolecular electron transfer pathway in ExBox(4+).
  • To characterize the electron transfer dynamics and recombination in ExBox(4+).

Main Methods:

  • Transient absorption spectroscopy
  • Femtosecond stimulated Raman spectroscopy (FSRS)
  • X-ray crystallography

Main Results:

  • Photoexcitation of ExBox(4+) initiates intramolecular electron transfer from p-xylylene linkers to viologen units.
  • Electron transfer occurs in approximately 240 picoseconds.
  • Electron recombination occurs in approximately 4 nanoseconds.
  • A crystal structure of the doubly reduced ExBox(2+) was obtained.

Conclusions:

  • ExBox(4+) exhibits a novel through-bond electron transfer mechanism.
  • This pathway is relevant for designing efficient artificial photosynthetic systems.
  • The study provides insights into electron storage and transfer in cyclophane molecules.