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Related Concept Videos

Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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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...
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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...
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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.
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Updated: Aug 12, 2025

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes
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Electropolymerization without an electric power supply.

Suguru Iwai1, Taichi Suzuki1, Hiroki Sakagami1

  • 1Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8502, Japan.

Communications Chemistry
|January 25, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel electrosynthesis technique using streaming potential-driven bipolar electrochemistry. This power-free method successfully polymerized aromatic monomers into polymer films without external electricity.

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Area of Science:

  • Electrochemistry
  • Polymer Chemistry
  • Materials Science

Background:

  • Electrosynthesis is a growing field in synthetic chemistry, with advancements in microflow reactors and bipolar electrochemistry.
  • Conventional electrosynthesis typically requires external electrical power, limiting its accessibility and sustainability.
  • There is a need for innovative electrochemical methods that operate without direct power input.

Purpose of the Study:

  • To demonstrate an advanced electrosynthesis method that operates without the application of electric power.
  • To explore the potential of streaming potential-driven bipolar electrochemistry for organic synthesis.
  • To showcase the feasibility of synthesizing polymer films using this power-free approach.

Main Methods:

  • Implementation of a streaming potential-driven bipolar electrochemistry setup.
  • Utilizing a microchannel reactor for electrolyte flow.
  • Electrochemical oxidative polymerization of aromatic monomers.

Main Results:

  • Successful polymerization of aromatic monomers was achieved on an electrode surface acting as an anode.
  • Polymer films were formed without the need for an external electric power supply.
  • The method demonstrates proof-of-concept for power-free electrosynthesis.

Conclusions:

  • Streaming potential-driven bipolar electrochemistry offers a viable alternative for electrosynthesis without external power.
  • This technique enables the formation of polymer films, showcasing its utility in organic synthesis.
  • The developed method represents a significant advancement towards sustainable and accessible electrochemical synthesis.