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Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes
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Electro-Controlled Living Cationic Polymerization.

Wei Sang1, Qiang Yan1

  • 1State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Engineering, Fudan University, Shanghai, 200433, China.

Angewandte Chemie (International Ed. in English)
|March 7, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces electrochemically controlled living cationic polymerization, enabling precise ON/OFF control of polymer synthesis. This novel method offers a versatile and sustainable approach for creating well-defined polymers using external electrical potential.

Keywords:
cationelectrocatalysiselectrochemistryliving polymerizationquinone

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Area of Science:

  • Polymer Chemistry
  • Electrochemistry
  • Materials Science

Background:

  • Cationic polymerization is an industrially significant process.
  • Stimulus-regulated cationic polymerization methods are underdeveloped.
  • Living polymerization techniques offer precise control over polymer architecture.

Purpose of the Study:

  • To develop the first electrochemically controlled living cationic polymerization.
  • To demonstrate ON/OFF control of polymerization using external potential.
  • To establish a versatile method for synthesizing well-defined polymers.

Main Methods:

  • Utilizing an external electrical potential to drive polymerization.
  • Employing an organic-based electrocatalyst for cationic chain-transfer.
  • Switching the electrocatalyst between oxidized and reduced states to control polymerization.

Main Results:

  • Achieved well-defined polymers with controlled molecular mass and narrow dispersity.
  • Demonstrated successful polymerization of various monomers, including vinyl ethers and styrenes.
  • Exhibited precise ON/OFF control of polymerization via electrocatalyst state switching.

Conclusions:

  • Electrochemical control offers a new paradigm for living ionic polymerization.
  • This method provides a sustainable and versatile route to advanced polymer materials.
  • The technique holds promise for future external-regulated polymerization strategies.