Nanoparticles of Well-defined 4-Arm stars made using nanoreactors in water

Khaled O. Sebakhy, Mikhail Gavrilov, David Valade, Zhongfan Jia, Michael J. Monteiro

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


In this work, the use of a nanoreactor is demonstrated to rapidly prepare monodisperse polymer nanoparticles in water-based dispersion consisting of 4-arm star polymer via the R-group RAFT approach. It is shown that by heating a nanoparticle assembler above its lower critical solution temperature (LCST), stabilized nanoparticles are formed that act as a template for the 4-arm star RAFT-mediated polymerization of styrene. Monodisperse nanoparticles of size (between 40 and 90 nm) containing monodisperse polymer of desired molecular weight (30-95 k) are obtained with little star-star coupling due to compartmentalization. The nanoreactor technique allows independent control over the size and molecular weight with a 4-arm star topology.

Original languageEnglish
Pages (from-to)193-197
Number of pages5
Issue number2
Publication statusPublished - 1 Jan 2014
Externally publishedYes


  • 4-arm stars
  • emulsion polymerization
  • polystyrene
  • RAFT


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