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Design of a hydrophilic ruthenium catalyst for metal-catalyzed living radical polymerization: Highly active catalysis in water

RSC Advances, ISSN: 2046-2069, Vol: 6, Issue: 8, Page: 6577-6582
2016
  • 11
    Citations
  • 0
    Usage
  • 10
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    11
    • Citation Indexes
      11
  • Captures
    10

Article Description

A novel hydrophilic phosphine ligand for a ruthenium catalyst was synthesized towards useful living radical polymerization in water. Triethylene glycol (TEG) was introduced at the para position of triphenylphosphine and the resultant TEG-decorated ligand was combined with a Cp∗-based ruthenium precursor ([Cp∗Ru(μ-Cl)]) to prepare a hydrophilic ruthenium complex. The obtained ruthenium complex induced homogeneous controlled polymerization of poly(ethylene glycol) methacrylate (PEGMA) in water: the monomer conversion reached over 90% in 20 min, and the obtained polymers showed narrow MWD (M/M < 1.16). The ruthenium catalyst was active enough to allow a decrease in catalyst amount ([Ru]/[initiator] = 1/100) or polymerization at low temperature, 0 °C [for 2-hydroxyethyl methacrylate (HEMA)]. The catalyst also induced aqueous block copolymerization for the combination of water-soluble monomers: PEGMA/HEMA and PEGMA/2-(dimethylamino)ethyl methacrylate (MeDMA).

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