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Related Concept Videos

Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

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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...
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Catalysis02:50

Catalysis

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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

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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...
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
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Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
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Conjugated Microporous Polymers for Heterogeneous Catalysis.

Yun-Bing Zhou1, Zhuang-Ping Zhan1

  • 1Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.

Chemistry, an Asian Journal
|October 19, 2017
PubMed
Summary

Conjugated microporous polymers (CMPs) offer superior stability for heterogeneous catalysis. These advanced materials enable efficient, recyclable catalysts for organic reactions, outperforming traditional methods.

Keywords:
conjugated porous polymersheterogeneous catalysisorganocatalysisphotocatalysisporphyrin

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Catalysis

Background:

  • Conjugated microporous polymers (CMPs) are 3D networked polymers with permanent micropores and π-conjugated skeletons.
  • CMPs exhibit enhanced chemical and thermal stability compared to metal-organic frameworks (MOFs) and covalent organic frameworks (COFs).
  • Significant advancements in CMPs for heterogeneous catalysis have occurred over the past seven years.

Purpose of the Study:

  • To review the progress of CMPs as a platform for developing highly efficient and recyclable heterogeneous catalysts.
  • To discuss the design, synthesis, and structure of CMP catalysts for organic reactions.
  • To highlight the advantages of CMP catalysts, including higher activity, stability, and selectivity.

Main Methods:

  • Bottom-up synthesis strategies to incorporate catalytic moieties directly into CMP frameworks.
  • Characterization of CMP catalyst structure and properties.
  • Evaluation of CMP catalysts in various organic reactions.

Main Results:

  • Heterogeneous CMP catalysts demonstrate superior performance compared to homogeneous analogs.
  • CMP catalysts are easily isolated and recycled, offering practical advantages.
  • The incorporation of catalytic moieties into CMPs leads to enhanced activity, stability, and selectivity.

Conclusions:

  • CMPs represent a promising platform for designing advanced heterogeneous catalysts.
  • The unique properties of CMPs facilitate the development of efficient and sustainable catalytic systems.
  • Further research into CMP design and synthesis will drive innovation in catalysis.