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Surface Grafting via Photo‐Induced Copper‐Mediated Radical Polymerization at Extremely Low Catalyst Concentrations
Author(s) -
Laun Joachim,
Vorobii Mariia,
de los Santos Pereira Andres,
PopGeorgievski Ognen,
Trouillet Vanessa,
Welle Alexander,
BarnerKowollik Christopher,
RodriguezEmmenegger Cesar,
Junkers Tanja
Publication year - 2015
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201500322
Subject(s) - copper , copolymer , catalysis , polymerization , grafting , polymer chemistry , materials science , radical polymerization , photochemistry , chemical engineering , chemistry , polymer , organic chemistry , composite material , metallurgy , engineering
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.