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

Aldehydes and Ketones with Amines: Imine Formation Mechanism01:23

Aldehydes and Ketones with Amines: Imine Formation Mechanism

6.4K
Imine formation involves the addition of carbonyl compounds to a primary amine. It begins with the generation of carbinolamine through a series of steps involving an initial nucleophilic attack and then several proton transfer reactions. The second part includes the elimination of water, as a leaving group, to give the imine.
Imines are formed under mildly acidic conditions. A pH of 4.5 is ideal for the reaction.
If the pH is low or the solution is too acidic, the reaction slows down in the...
6.4K
Aldehydes and Ketones with Amines: Imine and Enamine Formation Overview01:16

Aldehydes and Ketones with Amines: Imine and Enamine Formation Overview

5.0K
Primary amines react with carbonyl compounds—aldehydes and ketones—to generate imines. Imines consist of a C=N double bond and are named Schiff bases after its discoverer—the German chemist Hugo Schiff. On the other hand, secondary amines react with carbonyl compounds to give enamines. In enamines, the presence of a C=C double bond adjacent to the nitrogen atom leads to the delocalization of the lone pair.
5.0K
Basicity of Heterocyclic Aromatic Amines01:25

Basicity of Heterocyclic Aromatic Amines

6.2K
Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
6.2K
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

748
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...
748
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

523
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...
523
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement01:21

[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement

2.8K
The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
2.8K

You might also read

Related Articles

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

Sort by
Same author

Body Composition Analysis in Young Patients with Recent Diagnosis of Multiple Sclerosis: An Exploratory Study.

Journal of clinical medicine·2026
Same author

Microporous Polyamine (PIM-EA-TB) Modified with Hydrated NiMoO<sub>4</sub> Enhances the Photocatalytic Reduction of Nitrogen to Ammonia.

ACS applied engineering materials·2026
Same author

Multivariate sulfur-functionalized MOFs shaped into alginate spheres for robust and reusable multidye water remediation.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Porous Organic Cages for CO<sub>2</sub> Capture and Confined Reduction.

Angewandte Chemie (International ed. in English)·2026
Same author

Chemiluminescence Detection of Hydrogen Peroxide with a Polymer of an Intrinsic Microporosity Solid State Emitter.

ACS applied polymer materials·2026
Same author

Mechano-metabolic feedback connects tissue fluidity to mitochondrial DNA-dependent immunity in breast cancer.

Nature communications·2026

Related Experiment Video

Updated: Sep 6, 2025

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.1K

CO2 Separation by Imide/Imine Organic Cages.

Sonia La Cognata1, Riccardo Mobili1, Chiara Milanese1

  • 1Department of Chemistry, University of Pavia, Viale Tarquato Taramelli 12, Pavia, 27100, Italy.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|June 28, 2022
PubMed
Summary

New organic cages selectively capture carbon dioxide (CO2) from nitrogen and methane. These materials show promise for both vacuum swing adsorption and mixed-matrix membranes in gas separation applications.

Keywords:
carbon capturegas separationmixed-matrix membranesorganic cagesporous materials

More Related Videos

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
10:44

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Published on: April 19, 2019

11.0K
Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture
08:00

Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture

Published on: September 29, 2023

2.6K

Related Experiment Videos

Last Updated: Sep 6, 2025

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.1K
Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
10:44

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Published on: April 19, 2019

11.0K
Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture
08:00

Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture

Published on: September 29, 2023

2.6K

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Separation Science

Background:

  • Selective gas separation is crucial for industrial processes and environmental applications.
  • Organic cages offer tunable porous structures for molecular recognition and separation.
  • Carbon dioxide (CO2) capture from flue gas and natural gas streams is a significant challenge.

Purpose of the Study:

  • To synthesize and characterize novel imide/imine-based organic cages.
  • To evaluate the CO2 separation performance of these cages using vacuum swing adsorption (VSA).
  • To investigate the utility of these cages as fillers in mixed-matrix membranes (MMMs) for gas separation.

Main Methods:

  • Synthesis of two novel imide/imine-based organic cage compounds.
  • Gas adsorption experiments under vacuum swing adsorption conditions to assess CO2 selectivity over N2 and CH4.
  • Fabrication of mixed-matrix membranes by incorporating the organic cages into Matrimid® and PEEK-WC polymer matrices.
  • Characterization of membrane properties and evaluation of gas transport performance (permeability and selectivity).

Main Results:

  • The novel organic cages demonstrated selective adsorption of CO2 over N2 and CH4.
  • Incorporation of the cages into polymer matrices yielded dense and robust mixed-matrix membranes.
  • The MMMs exhibited enhanced gas transport properties and improved CO2 selectivity compared to neat polymer membranes.
  • Successful application of the cages in both VSA and MMMs for CO2 separation.

Conclusions:

  • Imide/imine-based organic cages are effective materials for selective CO2 separation.
  • These cages can be utilized in both vacuum swing adsorption and mixed-matrix membrane technologies.
  • The developed materials offer a promising route for efficient CO2 capture and purification.