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

Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)01:16

Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)

3.4K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
3.4K
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

2.8K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
2.8K
Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

4.3K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
4.3K
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

2.6K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.6K
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

2.3K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
2.3K
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

3.1K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
3.1K

You might also read

Related Articles

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

Sort by
Same author

Artificial Processive Catalytic Systems: Bridging Synthetic Polymers and Biological Precision.

Polymer science & technology (Washington, D.C.)·2026
Same author

Author Correction: Mapping in situ the assembly and dynamics in aqueous supramolecular polymers.

Nature communications·2026
Same author

Macrocyclic Molecular Glues for the 14-3-3/ChREBP Interaction: Affinity and Cooperativity in an Inverse Relationship.

Angewandte Chemie (International ed. in English)·2025
Same author

Coupled Benchtop NMR and EPR Spectroscopy Reveals the Electronic Structure of Viologen Radicals in a Redox Flow Battery.

ACS electrochemistry·2025
Same author

Bayesian Optimization for Multicomponent Supramolecular Systems.

Journal of the American Chemical Society·2025
Same author

Tuning collagen nonlinear mechanics with interpenetrating networks drives adaptive cellular phenotypes in three dimensions.

Science advances·2025
Same journal

Decoding Galectin-Glycan Recognition with <sup>19</sup>F-Tagged Lectins: from Simple Glycans to the Cellular Glycocalyx.

Journal of the American Chemical Society·2026
Same journal

Open- and Closed-Shell Roles of Sensitizer and Annihilator in Pseudo-Single Component Mixtures for Upconversion.

Journal of the American Chemical Society·2026
Same journal

Pressure-Induced Superconductivity at 15 K in van-der-Waals Ferroelectric CuInP<sub>2</sub>S<sub>6</sub>.

Journal of the American Chemical Society·2026
Same journal

Carbene Analogues of Group 15: Reduction of s-Hydrindacene-Based Chloropnictogenium Ions To Access an Antimony Hydride Monocation and a Trinuclear Bismuth Dication.

Journal of the American Chemical Society·2026
Same journal

Chiral-Ligand-Modulated Nickel-Catalyzed Stereoselective Radical Migratory C2-Arylation of Carbohydrates.

Journal of the American Chemical Society·2026
Same journal

Coordination-Constraint-Driven Enhanced Chirality Induction in Perovskite Quantum Dot Solids.

Journal of the American Chemical Society·2026
See all related articles

Related Experiment Video

Updated: Apr 16, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

8.6K

Allosterically controlled threading of polymers through macrocyclic dimers.

Seda Cantekin1, Albert J Markvoort2, Johannes A A W Elemans1

  • 1†Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.

Journal of the American Chemical Society
|March 4, 2015
PubMed
Summary
This summary is machine-generated.

Researchers created a stable supramolecular complex using a zinc porphyrin macrocycle and DABCO. This complex demonstrated slow polymer threading and dethreading, indicating a locked state due to allosteric interactions.

More Related Videos

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

4.1K
Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes
05:48

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Published on: November 21, 2017

8.7K

Related Experiment Videos

Last Updated: Apr 16, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

8.6K
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

4.1K
Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes
05:48

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes

Published on: November 21, 2017

8.7K

Area of Science:

  • Supramolecular Chemistry
  • Chemical Thermodynamics
  • Polymer Science

Background:

  • Ongoing research aims to build a molecular Turing machine using allosteric information transfer.
  • Macrocyclic complexes are key components for encoding polymer chains.
  • Understanding self-assembly in multicomponent systems is crucial for molecular device construction.

Purpose of the Study:

  • To thermodynamically and kinetically characterize a multicomponent self-assembled system.
  • To investigate the formation and stability of a zinc porphyrin-based complex with a polymer guest.
  • To elucidate the role of allosteric interactions in polymer binding within macrocyclic systems.

Main Methods:

  • Utilized a zinc porphyrin macrocyclic compound, 1,4-diazabicyclo[2.2.2]octane (DABCO), and a viologen-substituted polymer.
  • Employed spectroscopic measurements and computational modeling for system analysis.
  • Applied mass-balance modeling to determine association constants and complex fractions.

Main Results:

  • A stable 2:1 (porphyrin:DABCO) dimeric complex formed readily due to cooperative hydrogen and metal-ligand bonds.
  • Titration with the polymer resulted in a complex mixture of species.
  • Kinetic studies showed remarkably slow polymer threading and dethreading rates.

Conclusions:

  • The stable dimeric complex effectively locks the polymer guest via strong allosteric interactions.
  • The findings provide insights into the design of molecular machines based on self-assembled systems.
  • This work contributes to the understanding of information transfer in synthetic molecular systems.