A Silver Bullet: Elemental Silver as an Efficient Reducing Agent for Atom Transfer Radical Polymerization of Acrylates

Elemental silver was used as a reducing agent in the atom transfer radical polymerization (ATRP) of acrylates. Silver wire, in conjunction with a CuBr2/​TPMA catalyst, enabled the controlled, rapid preparation of polyacrylates with dispersity values down to Đ = 1.03. The silver wire in these reactio...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2015-02, Vol.137 (4), p.1428-1431
Main Authors: Williams, Valerie A, Ribelli, Thomas G, Chmielarz, Pawel, Park, Sangwoo, Matyjaszewski, Krzysztof
Format: Article
Language:English
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Summary:Elemental silver was used as a reducing agent in the atom transfer radical polymerization (ATRP) of acrylates. Silver wire, in conjunction with a CuBr2/​TPMA catalyst, enabled the controlled, rapid preparation of polyacrylates with dispersity values down to Đ = 1.03. The silver wire in these reactions was reused several times in sequential reactions without a decline in performance, and the amount of copper catalyst used was reduced to 10 ppm without a large decrease in control. A poly­(n-butyl acrylate)-block-poly­(tert-butyl acrylate) diblock copolymer was synthesized with a molecular weight of 91 400 and Đ = 1.04, demonstrating good retention of chain-end functionality and a high degree of livingness in this ATRP system.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja512519j