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Ultra-precise insertion of functional monomers in chain-growth polymerizations

Author

Listed:
  • Mirela Zamfir

    (Precision Macromolecular Chemistry Group—icFRC, Institut Charles Sadron, UPR22-CNRS, 23 rue du Loess, BP 84047, Cedex 2, Strasbourg 67034, France.)

  • Jean-François Lutz

    (Precision Macromolecular Chemistry Group—icFRC, Institut Charles Sadron, UPR22-CNRS, 23 rue du Loess, BP 84047, Cedex 2, Strasbourg 67034, France.)

Abstract

Chain-growth polymerizations are popular methods because they allow synthesis of high-molecular weight polymers in high yields and in short times. However, copolymers prepared by such processes generally exhibit uncontrolled monomer sequences. The controlled radical copolymerization of styrene with N-substituted maleimides is an interesting exception allowing preparation of controlled primary structures. However, because of the statistical nature of chain-growth mechanisms, sequence deviations are still present in these copolymers. Here we describe a specific range of experimental conditions that allows ultra-precise incorporation of a single N-substituted maleimide unit in a polystyrene chain. This occurs in a given kinetic regime where the styrene/N-substituted maleimide comonomer ratio is very low. This situation usually only arises in the later stages of a chain-growth polymerization. Nevertheless, we show that it is possible to restore these particular kinetic conditions multiple times during a single polymerization by using successive feeds of donor and acceptor comonomers.

Suggested Citation

  • Mirela Zamfir & Jean-François Lutz, 2012. "Ultra-precise insertion of functional monomers in chain-growth polymerizations," Nature Communications, Nature, vol. 3(1), pages 1-8, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2151
    DOI: 10.1038/ncomms2151
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