Surface Grafting via Photo-Induced Copper-Mediated Radical Polymerization at Extremely Low Catalyst Concentrations

Joachim Laun, Mariia Vorobii, Andres De Los Santos Pereira, Ognen Pop-Georgievski, Vanessa Trouillet, Alexander Welle, Christopher Barner-Kowollik, Cesar Rodriguez-Emmenegger, Thomas Junkers

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Abstract

Surface-initiated photo-induced copper-mediated radical polymerization is employed to graft a wide range of polyacrylate brushes from silicon substrates at extremely low catalyst concentrations. This is the first time that the controlled nature of the reported process is demonstrated via block copolymer formation and re-initiation experiments. In addition to unmatched copper catalyst concentrations in the range of few ppb, film thicknesses up to almost 1 μm are achieved within only 1 h. Surface-initiated photo-induced copper-mediated radical polymerization is employed to graft a wide range of polyacrylate brushes from silicon substrates at extremely low catalyst concentrations. Block copolymer formation and re-initiation experiments evidence good control over the reaction. In addition to unmatched copper catalyst concentrations in the range of few ppb, film thicknesses up to almost 1 μm are achieved within only 1 h.

Original languageEnglish
Pages (from-to)1681-1686
Number of pages6
JournalMacromolecular Rapid Communications
Volume36
Issue number18
DOIs
Publication statusPublished - 1 Sep 2015
Externally publishedYes

Keywords

  • copper-mediated polymerization
  • photo-induced polymerization
  • polymer brushes
  • reversible deactivation radical polymerization
  • spatial control

Cite this

Laun, J., Vorobii, M., De Los Santos Pereira, A., Pop-Georgievski, O., Trouillet, V., Welle, A., Barner-Kowollik, C., Rodriguez-Emmenegger, C., & Junkers, T. (2015). Surface Grafting via Photo-Induced Copper-Mediated Radical Polymerization at Extremely Low Catalyst Concentrations. Macromolecular Rapid Communications, 36(18), 1681-1686. https://doi.org/10.1002/marc.201500322