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

• DOI: 10.1002/marc.201500322
• Publication Date: 2015-07-06T19:10:51Z
• Authors: Joachim Laun; Mariia Vorobii; Andres de los San...; Ognen Pop‐Georgie...; Vanessa Trouillet; Alexander Welle; Christopher Barne...; Cesar Rodriguez‐E...; Tanja Junkers
• Keywords: 570; Grafting (chemical); Light; Polymers; photo-induced polymerization; polymer; Copper catalyst; chemistry; polymer brushes; 01 natural sciences; Catalysis; Polymerization; copper-mediated polymerization; spatial control; Catalyst concentration; Surface grafting; Atom transfer radical polymerization; reversible deactivation radical polymerization; info:eu-repo/classification/ddc/570; Catalysts; catalysis; biology; Copolymers; Surface-initiated; Silicon substrates; Photoinduced polymerization; 540; Life sciences; Block copolymers; 0104 chemical sciences; ddc:570; light; Copper

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 the first time that controlled nature reported process demonstrated via block copolymer formation and re‐initiation experiments. In addition unmatched copper concentrations in few ppb, film thicknesses up almost 1 μm are achieved within only h. image