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

Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
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:
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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...
Ladder Diagrams: Redox Equilibria01:30

Ladder Diagrams: Redox Equilibria

Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...

You might also read

Related Articles

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

Sort by
Same author

DREAM repressive activity links somatic mutation, lifespan and disease.

Nature aging·2026
Same author

Toroidicity as a route towards non-volatile quaternary memory in antiferromagnets.

Nature communications·2026
Same author

Aging clocks delineate neuron types vulnerable or resilient to neurodegeneration and identify neuroprotective interventions.

Nature aging·2026
Same author

Valence-free open nanoparticle superlattices.

Nature communications·2026
Same author

Flat-band tuning and emergent itinerant magnetism in Sr(Co<sub>1-<i>x</i></sub>Pd<sub><i>x</i></sub>)<sub>2</sub>As<sub>2</sub>.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Addendum: Aging by the clock and yet without a program.

Nature aging·2025
Same journal

Synergistic Impact of Turkey Red Oil and Sodium Oleate on the Separation of Dolomite from Apatite.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Metal Substrate-Dependent Tribological Performance of Environmentally Acceptable Ester-PAO Lubricant Blends.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

From Waste to Water Remediation: Fly Ash-Derived Hectorite for Dye and Heavy Metal Removal.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Mechanism of the Cholesterol-dependent Anchoring and Conformation of LPP-scFv on the PEGylated Liposome Surface.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Visualizing Cooperative Adsorption of an Enzyme Mixture at an Air-Liquid Interface.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Unraveling Nanoplastics-Enzyme Interactions: Physicochemical, Structural, Functional, and Cell Biological Characterization of α-Amylase-Nanoplastics Complexes.

Langmuir : the ACS journal of surfaces and colloids·2026
See all related articles

Related Experiment Video

Updated: May 30, 2026

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

Ionic specificity in pH regulated charged interfaces: Fe3+ versus La3+.

Wenjie Wang1, Rebecca Y Park, David H Meyer

  • 1Ames Laboratory, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 26, 2011
PubMed
Summary
This summary is machine-generated.

The distribution of trivalent ions La(3+) and Fe(3+) near charged lipid interfaces depends on ion speciation and surface charge. La(3+) distribution is surface charge-dependent, while Fe(3+) binding is specific, influenced by iron complexes.

More Related Videos

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
08:43

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Published on: October 27, 2018

Related Experiment Videos

Last Updated: May 30, 2026

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
08:43

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Published on: October 27, 2018

Area of Science:

  • Physical Chemistry
  • Surface Science
  • Biophysical Chemistry

Background:

  • Amphiphilic interfaces play crucial roles in biological and chemical systems.
  • Understanding ion interactions at interfaces is key to controlling interfacial properties.
  • Trivalent ions like Fe(3+) and La(3+) exhibit complex behaviors due to their charge and speciation.

Purpose of the Study:

  • To investigate the distribution of trivalent ions, specifically Fe(3+) and La(3+), at charged interfaces formed by dihexadecyl phosphate (DHDP) and arachidic acid (AA).
  • To elucidate the influence of surface charge and ion speciation on ion binding at these interfaces.
  • To compare the binding specificities of La(3+) and Fe(3+) with different amphiphilic interfaces.

Main Methods:

  • Utilized two amphiphilic interfaces: dihexadecyl phosphate (DHDP) and arachidic acid (AA), with tunable pK(a) values.
  • Investigated the distribution of trivalent ions Fe(3+) and La(3+) under varying pH conditions.
  • Analyzed the speciation of iron ions in solution and their impact on interfacial binding.

Main Results:

  • Lanthanum (La(3+)) ion distribution was primarily sensitive to the surface charge of the amphiphilic interface.
  • Iron (Fe(3+)) ion binding demonstrated high specificity, influenced by its solution speciation (e.g., Fe(OH)3, Fe(OH)2+).
  • Iron complexes formed covalent bonds even with uncharged interfaces, highlighting specific chemical interactions.

Conclusions:

  • Ion distribution at charged interfaces is governed by a combination of electrostatic interactions and specific chemical binding.
  • The speciation of ions in solution significantly dictates their interaction with amphiphilic interfaces.
  • These findings have implications for understanding ion behavior at various charged interfaces and in complex chemical systems.