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Related Concept Videos

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

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

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...
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

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...
Free-Radical Chain Reaction and Polymerization of Alkenes02:35

Free-Radical Chain Reaction and Polymerization of Alkenes

The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

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...
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

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 acceptor.

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Related Experiment Video

Updated: Jun 1, 2026

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

Phenylenevinylene Block Copolymers via Ring-Opening Metathesis Polymerization.

Chin-Yang Yu1, James W Kingsley, David G Lidzey

  • 1Organic Materials Innovation Centre, School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.

Macromolecular Rapid Communications
|June 4, 2011
PubMed
Summary

Researchers synthesized conjugated block copolymers using ring-opening metathesis polymerization. These polymers exhibit controlled block molecular weights and phase separation, enabling efficient energy transfer between polymer blocks.

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Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
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Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization

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Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
10:53

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

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Last Updated: Jun 1, 2026

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
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Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
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Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization

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Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
10:53

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Published on: October 10, 2016

Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Organic Synthesis

Background:

  • Conjugated block copolymers are crucial for advanced electronic and optical applications.
  • Precise control over block copolymer architecture is essential for tailoring material properties.
  • Ring-opening metathesis polymerization (ROMP) offers a versatile route to complex polymer structures.

Purpose of the Study:

  • To develop a method for synthesizing fully conjugated block copolymers with distinct phenylenevinylene repeating units.
  • To investigate the control over block molecular weights and copolymer composition.
  • To characterize the phase behavior and energy transfer properties of the resulting block copolymers.

Main Methods:

  • Sequential ring-opening metathesis polymerization (ROMP) of strained cyclophanedienes.
  • Initiation using ruthenium carbene complexes (Grubbs catalysts).
  • Atomic force microscopy (AFM) for thin film analysis.
  • Photoluminescence spectroscopy to study energy transfer.

Main Results:

  • Successfully synthesized fully conjugated block copolymers containing 1,4- and 1,3-phenylenevinylene units.
  • Demonstrated tight control over the molecular weight of individual polymer blocks.
  • Achieved independent tailoring of block copolymer volume fractions.
  • Observed extensive phase separation in thin films via AFM.
  • Confirmed efficient energy transfer between the different phenylenevinylene blocks through photoluminescence.

Conclusions:

  • Sequential ROMP provides a powerful strategy for creating well-defined conjugated block copolymers.
  • The synthesized materials exhibit controlled morphology and efficient inter-block energy transfer.
  • These block copolymers hold promise for applications in organic electronics and photonics.