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Cationic RAFT Polymerization Using ppm Concentrations of Organic Acid

Angewandte Chemie (International ed.), 2015-02, Vol.54 (6), p.1924-1928 [Peer Reviewed Journal]

2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim ;2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. ;ISSN: 1433-7851 ;EISSN: 1521-3773 ;DOI: 10.1002/anie.201410858 ;PMID: 25511364 ;CODEN: ACIEAY

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  • Title:
    Cationic RAFT Polymerization Using ppm Concentrations of Organic Acid
  • Author: Uchiyama, Mineto ; Satoh, Kotaro ; Kamigaito, Masami
  • Subjects: Addition polymerization ; block copolymers ; Cationic ; Cationic polymerization ; living polymerization ; Monomers ; organocatalysis ; Polymerization ; RAFT polymerization ; Rafts ; Transformations ; Vinyl ethers
  • Is Part Of: Angewandte Chemie (International ed.), 2015-02, Vol.54 (6), p.1924-1928
  • Description: A metal‐free, cationic, reversible addition–fragmentation chain‐transfer (RAFT) polymerization was proposed and realized. A series of thiocarbonylthio compounds were used in the presence of a small amount of triflic acid for isobutyl vinyl ether to give polymers with controlled molecular weight of up to 1×105 and narrow molecular‐weight distributions (Mw/Mn<1.1). This “living” or controlled cationic polymerization is applicable to various electron‐rich monomers including vinyl ethers, p‐methoxystyrene, and even p‐hydroxystyrene that possesses an unprotected phenol group. A transformation from cationic to radical RAFT polymerization enables the synthesis of block copolymers between cationically and radically polymerizable monomers, such as vinyl ether and vinyl acetate or methyl acrylate. Cationic RAFTing: A cationic reversible addition–fragmentation chain‐transfer (RAFT) polymerization with thiocarbonylthio compounds proceeds in the presence of a small amount of CF3SO3H. Various monomers including vinyl ethers as well as alkoxy‐ and hydroxystyrene can be used. A transformation from cationic to radical RAFT polymerization enables the synthesis of block copolymers between cationically and radically polymerizable monomers.
  • Publisher: Weinheim: WILEY-VCH Verlag
  • Language: English
  • Identifier: ISSN: 1433-7851
    EISSN: 1521-3773
    DOI: 10.1002/anie.201410858
    PMID: 25511364
    CODEN: ACIEAY
  • Source: Alma/SFX Local Collection
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