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Visible-Light-Induced Passerini Multicomponent Polymerization.

Bryan T Tuten1, Lies De Keer1,2, Sandra Wiedbrauk1

  • 1School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, QLD, 4000, Brisbane, Australia.

Angewandte Chemie (International Ed. in English)
|February 27, 2019
PubMed
Summary
This summary is machine-generated.

This study presents a novel visible-light polymerization using thioaldehydes for high molar mass polymers. These polymers feature thioester groups, enabling degradation and chain expansion for advanced soft materials.

Keywords:
Passerini reactionmulticomponent reactionsphotochemistrypolymerizationreaction kinetics

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Area of Science:

  • Polymer Chemistry
  • Organic Synthesis
  • Materials Science

Background:

  • Traditional Passerini multicomponent polymerization (MCP) often requires specific conditions and precursors.
  • Developing new polymerization methods for high molar mass polymers with tunable properties is crucial.

Purpose of the Study:

  • To introduce an additive-free, visible-light-induced Passerini multicomponent polymerization (MCP) using in situ generated thioaldehydes.
  • To synthesize high molar mass polymers with thioester moieties in the polymer backbone.

Main Methods:

  • Utilizing in situ photogenerated thioaldehydes, isocyanides, and carboxylic acids under visible light.
  • Optimizing complex reaction conditions via stochastic reaction path analysis and employing semi-batch procedures.
  • Investigating polymer degradation via aminolysis and chain expansion via thiirane insertion.

Main Results:

  • Achieved additive-free, visible-light-induced MCP for high molar mass chain generation.
  • Successfully synthesized polymers with thioester moieties incorporated into the backbone through Mumm rearrangement.
  • Demonstrated straightforward degradation by aminolysis and chain expansion by thiirane insertion.

Conclusions:

  • The developed thioaldehyde-based MCP offers a mild and efficient route to functional soft matter.
  • The resulting thioester-containing polymers exhibit tunable properties for degradation and further modification.
  • This method expands the scope of multicomponent polymerization for advanced material design.