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Related Concept Videos

Catalysis02:50

Catalysis

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.
Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
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...
Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.

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Updated: May 7, 2026

Utilization of Stop-flow Micro-tubing Reactors for the Development of Organic Transformations
13:09

Utilization of Stop-flow Micro-tubing Reactors for the Development of Organic Transformations

Published on: January 4, 2018

Organotextile catalysis.

Ji-Woong Lee1, Thomas Mayer-Gall, Klaus Opwis

  • 1Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany.

Science (New York, N.Y.)
|September 14, 2013
PubMed
Summary
This summary is machine-generated.

Textile immobilization of organocatalysts using UV light offers a novel approach to catalysis. This method provides stable, reusable, and highly enantioselective catalysts for diverse organic reactions.

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Area of Science:

  • Textile chemistry
  • Organic chemistry
  • Catalysis

Background:

  • Textiles are historically significant but underexplored in catalysis.
  • Organocatalysts are crucial in organic synthesis.
  • Immobilization of catalysts on solid supports enhances reusability and stability.

Purpose of the Study:

  • To develop a facile and permanent method for immobilizing organocatalysts onto textile materials.
  • To investigate the catalytic performance, stability, and recyclability of textile-immobilized organocatalysts.
  • To demonstrate the practical applicability of textile-based organocatalysis.

Main Methods:

  • Immobilization of organocatalysts (Lewis basic, Brønsted acidic, chiral) onto nylon textiles using ultraviolet (UV) light.
  • No chemical modification of the catalyst or textile material was required.
  • Testing the immobilized catalysts in various organic transformations, including asymmetric catalysis.

Main Results:

  • Successful permanent immobilization of organocatalysts on nylon textiles via UV irradiation.
  • Textile-immobilized organocatalysts exhibited excellent stability, activity, and recyclability.
  • High enantioselectivity (>95:5 enantiomeric ratio) was maintained over 250+ cycles in asymmetric catalysis.

Conclusions:

  • UV-initiated immobilization provides an effective route to textile-supported organocatalysts.
  • These functionalized catalytic materials are stable, reusable, and highly enantioselective.
  • Textile organocatalysis presents an inexpensive and accessible platform for various chemical applications.