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

The Supercomplexes in the Crista Membrane01:41

The Supercomplexes in the Crista Membrane

3.2K
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
3.2K
Redox Reactions01:24

Redox Reactions

59.4K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
59.4K
Redox Reactions01:27

Redox Reactions

1.4K
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
1.4K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

10.6K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
10.6K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

25.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
25.6K
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

1.7K
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
1.7K

You might also read

Related Articles

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

Sort by
Same author

Search for the Y(2175) in the Photoproduction Cross Section Measurement of γp→ϕπ^{+}π^{-}p at GlueX.

Physical review letters·2026
Same author

Physical Performance, Sarcopenia and Malnutrition-Basic Test Set for Everyday Use in Cancer Therapy.

Cancer medicine·2026
Same author

Upper Limit on the Photoproduction Cross Section of the Spin-Exotic π_{1}(1600).

Physical review letters·2025
Same author

Demonstration of a kHz-repetition-rate extreme ultraviolet laser at 41.8 nm.

Optics letters·2024
Same author

[Implantable intravitreal corticosteroids in chronic noninfectious uveitis].

Die Ophthalmologie·2024
Same author

Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment.

Physical review letters·2024

Related Experiment Video

Updated: Apr 3, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.8K

Friction mediated by redox-active supramolecular connector molecules.

B L Bozna1, J Blass1, M Albrecht

  • 1INM - Leibniz-Institute for New Materials, 66123 Saarbrücken, Germany.

Langmuir : the ACS Journal of Surfaces and Colloids
|September 15, 2015
PubMed
Summary

We explored nanoscale friction using atomic force microscopy, finding that ferrocene connector molecules significantly increase friction. Electrochemical control of ferrocene

More Related Videos

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy
08:34

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy

Published on: February 5, 2020

7.2K
Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

9.0K

Related Experiment Videos

Last Updated: Apr 3, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.8K
OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy
08:34

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy

Published on: February 5, 2020

7.2K
Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

9.0K

Area of Science:

  • Nanotechnology
  • Surface Science
  • Supramolecular Chemistry

Background:

  • Friction is a critical phenomenon at the nanoscale, influenced by surface interactions.
  • Supramolecular chemistry offers novel ways to control surface interactions through molecular recognition.
  • Cyclodextrins and ferrocene derivatives are key components in host-guest chemistry.

Purpose of the Study:

  • To investigate the role of ferrocene-based connector molecules in modulating nanoscale friction.
  • To explore the influence of electrochemical control on friction at functionalized surfaces.
  • To understand the dynamics of supramolecular complex formation and its effect on friction.

Main Methods:

  • Atomic force microscopy (AFM) was employed to measure friction at the nanometer scale.
  • Electrochemical control was applied to modify the state of ferrocene connector molecules.
  • Isothermal titration calorimetry (ITC) was used to study the binding kinetics of supramolecular complexes.

Main Results:

  • Ferrocene connector molecules increased friction by up to a factor of 12 compared to controls.
  • Electrochemical oxidation of ferrocene to ferrocenium decreased friction due to altered complex stability.
  • Switching electrochemical potentials resulted in reversible friction changes between 1.2-1.8.
  • ITC confirmed fast dissociation and rebinding kinetics, indicating an equilibrium regime.

Conclusions:

  • Nanoscale friction can be effectively tuned using electrochemically switchable supramolecular interactions.
  • Ferrocene-cyclodextrin complexes provide a responsive system for controlling surface friction.
  • This work demonstrates a novel approach for developing switchable nanotribological surfaces.