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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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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
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Water compatible supramolecular polymers: recent progress.

Weiwei Han1, Wei Xiang1, Qingyun Li2

  • 1College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Dianzi 2nd Road Dongduan#18, Xi'an, Shaanxi 710065, China. hanweiwei@xsyu.edu.cn.

Chemical Society Reviews
|August 4, 2021
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This summary is machine-generated.

This review summarizes water-compatible supramolecular polymers (WCSPs), highlighting their chemistry, design, and applications. It categorizes WCSPs by supramolecular approach, aiding understanding of their development and potential uses.

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Area of Science:

  • Materials Science
  • Polymer Chemistry

Background:

  • Water-compatible supramolecular polymers (WCSPs) integrate aqueous compatibility with the reversible and responsive characteristics of supramolecular polymers.
  • WCSPs are increasingly recognized for applications in stimuli-responsive materials, self-healing materials, and drug delivery systems.

Purpose of the Study:

  • To provide a comprehensive overview of WCSP chemistry from 2016 to mid-2021.
  • To categorize WCSPs based on their core supramolecular assembly strategies.
  • To discuss synthesis, polymer structure, design principles, and potential applications of WCSPs.

Main Methods:

  • Categorization of WCSPs into five groups: hydrogen-bonding arrays, electrostatic interactions, large π-conjugated subunits, host-guest interactions, and peptide-based systems.
  • Review of literature published between 2016 and mid-2021 focusing on WCSP synthesis, structure, and applications.

Main Results:

  • Detailed discussion of five distinct supramolecular approaches used in WCSP preparation.
  • Exploration of the synthesis strategies and structural features of various WCSPs.
  • Identification of key design considerations and underlying principles for developing WCSPs.

Conclusions:

  • WCSPs represent a versatile class of materials with growing importance in various scientific fields.
  • Understanding the diverse supramolecular strategies is crucial for advancing WCSP design and application.
  • Further research into WCSPs promises innovative solutions for materials science and beyond.