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Simplified Electrochemically Mediated Atom Transfer Radical Polymerization using a Sacrificial Anode
Author(s) -
Park Sangwoo,
Chmielarz Paweł,
Gennaro Armando,
Matyjaszewski Krzysztof
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201410598
Subject(s) - atom transfer radical polymerization , polymerization , monomer , anode , copolymer , polymer chemistry , molar mass distribution , acrylate , materials science , radical polymerization , chemistry , butyl acrylate , electrode , polymer , organic chemistry
Simplification of electrochemically mediated atom transfer radical polymerization was achieved efficiently under either potentiostatic or galvanostatic conditions using an aluminum wire sacrificial anode ( se ATRP) immersed directly into the reaction flask without separating the counter electrode. se ATRP polymerizations were carried out under different applied potentials, E app s= E 1/2 , E pc , E pc −40 mV, and E pc −80 mV. As the rate of polymerization ( R p ) can be modulated by applying different E app potentials, more reducing conditions resulted in faster R p . The polymerization results showed similar narrow molecular‐weight distribution throughout the reactions, similar to results observed for n ‐butyl acrylate (BA) polymerization under conventional e ATRP. High‐molecular‐weight PBA and diblock copolymers were synthesized by se ATRP with more than 90 % monomer conversion. Furthermore, galvanostatic conditions were developed for synthesizing PBA with the two‐electrode system.