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

Ion Exchange01:17

Ion Exchange

1.5K
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...
1.5K
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

2.2K
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
2.2K
Mechanisms of Membrane Domain Formation00:59

Mechanisms of Membrane Domain Formation

3.2K
Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with...
3.2K
Intermolecular Forces03:13

Intermolecular Forces

61.8K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
61.8K
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

2.9K
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
2.9K
Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

5.5K
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
5.5K

You might also read

Related Articles

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

Sort by
Same author

Membrane-Confined Proton Management Orchestrates Proton-Electron Transfer for Efficient Photocatalytic Hydrogen Peroxide Synthesis.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

A GelMA hydrogel co-loaded with resveratrol, 18-β-glycyrrhetinic acid, and berberine for the combination therapy of infected wounds.

The Journal of pharmacy and pharmacology·2026
Same author

Mitigation of antibiotic resistance risk in aerobic sludge by zero-valent iron: From pathogen reduction to conjugation inhibition and network weakening.

Bioresource technology·2026
Same author

Efficient Osmotic Energy Conversion Enabled by Self-Standing COF Membranes With Varied Sulfonic Acid Group Density.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

All-trans retinoic acid and lansoprazole potentiated NKG2D-CAR T for breast cancer treatment.

International immunopharmacology·2026
Same author

Programming Migration Energy Landscapes in Isoreticular Hydrogen-Bonded Organic Framework Nanochannels for Kinetic Cs<sup>+</sup>/Sr<sup>2+</sup> Separation.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Apr 23, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

9.7K

Covalent organic framework membranes for ion separation and ion-driven energy conversion.

Qing Guo1, Jiaming Yi1, Huixia Lv1

  • 1Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China. sunqichs@zju.edu.cn.

Chemical Society Reviews
|April 22, 2026
PubMed
Summary

Covalent organic framework (COF) membranes offer precise ion separation and energy conversion. Their tunable nanochannels and pore walls enable advanced selectivity for various ions and applications.

More Related Videos

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
07:55

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

10.6K
Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

12.8K

Related Experiment Videos

Last Updated: Apr 23, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

9.7K
Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
07:55

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

10.6K
Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

12.8K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Separation Science

Background:

  • Covalent organic framework (COF) membranes are evolving from porous solids to processable platforms.
  • COFs offer precise control over nanochannel properties, unlike conventional polymer membranes.

Purpose of the Study:

  • To review fabrication routes and membrane attributes of COF membranes.
  • To organize advances in aqueous ion separation based on design logics.
  • To connect transport principles to energy conversion applications.

Main Methods:

  • Summarizing fabrication routes: interfacial growth, casting, layer assembly, composite architectures.
  • Organizing ion separation advances by design logics for different ion targets.
  • Connecting transport principles to energy conversion, including salinity-gradient, thermal, and photo fields.

Main Results:

  • COF membranes enable tunable selectivity for monovalent/multivalent ions, monovalent cations, and anions (Cl-/SO42-).
  • Sub-nanometre sieving and hydrogen-bond-assisted proton conduction achieve high proton/metal-ion selectivity.
  • COF membranes show potential in salinity-gradient energy conversion.

Conclusions:

  • Scalable fabrication with defect control and orientation is crucial for COF membrane translation.
  • Mechanistic validation in complex electrolytes and process-relevant benchmarking are needed.
  • COF membranes offer promising avenues for advanced ion separation and energy conversion.