Metal-Free Atom Transfer Radical Polymerization

Metal-Free Atom Transfer Radical Polymerization

Overcoming the challenge of metal contamination in traditional ATRP systems, a metal-free ATRP process, mediated by light and catalyzed by an organic-based photoredox catalyst, is reported. Polymerization of vinyl monomers are efficiently activated and deactivated with light leading to excellent con...

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Veröffentlicht in:Journal of the American Chemical Society 2014-11, Vol.136 (45), p.16096-16101
Hauptverfasser: Treat, Nicolas J, Sprafke, Hazel, Kramer, John W, Clark, Paul G, Barton, Bryan E, Read de Alaniz, Javier, Fors, Brett P, Hawker, Craig J
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container_end_page 16101
container_issue 45
container_start_page 16096
container_title Journal of the American Chemical Society
container_volume 136
creator Treat, Nicolas J
Sprafke, Hazel
Kramer, John W
Clark, Paul G
Barton, Bryan E
Read de Alaniz, Javier
Fors, Brett P
Hawker, Craig J
description Overcoming the challenge of metal contamination in traditional ATRP systems, a metal-free ATRP process, mediated by light and catalyzed by an organic-based photoredox catalyst, is reported. Polymerization of vinyl monomers are efficiently activated and deactivated with light leading to excellent control over the molecular weight, polydispersity, and chain ends of the resulting polymers. Significantly, block copolymer formation was facile and could be combined with other controlled radical processes leading to structural and synthetic versatility. We believe that these new organic-based photoredox catalysts will enable new applications for controlled radical polymerizations and also be of further value in both small molecule and polymer chemistry.
doi_str_mv 10.1021/ja510389m
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title Metal-Free Atom Transfer Radical Polymerization
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