Simplified Electrochemically Mediated Atom Transfer Radical Polymerization using a Sacrificial Anode |
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| Authors: | Sangwoo Park Pawe? Chmielarz Armando Gennaro Krzysztof Matyjaszewski |
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| Institution: | 1. Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213 (USA);2. Department of Physical Chemistry, Faculty of Chemistry, Rzeszow University of Technology, Al. Powstańców Warszawy 6, 35‐959 Rzeszow (Poland);3. Dipartimento di Scienze Chimiche, Università di Padova via Marzolo 1, 35131 Padova (Italy) |
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| Abstract: | Simplification of electrochemically mediated atom transfer radical polymerization was achieved efficiently under either potentiostatic or galvanostatic conditions using an aluminum wire sacrificial anode (seATRP) immersed directly into the reaction flask without separating the counter electrode. seATRP polymerizations were carried out under different applied potentials, Eapps=E1/2, Epc, Epc ?40 mV, and Epc ?80 mV. As the rate of polymerization (Rp) can be modulated by applying different Eapp potentials, more reducing conditions resulted in faster Rp. The polymerization results showed similar narrow molecular‐weight distribution throughout the reactions, similar to results observed for n‐butyl acrylate (BA) polymerization under conventional eATRP. High‐molecular‐weight PBA and diblock copolymers were synthesized by seATRP with more than 90 % monomer conversion. Furthermore, galvanostatic conditions were developed for synthesizing PBA with the two‐electrode system. |
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| Keywords: | atom transfer radical polymerization block copolymers electrochemistry sacrificial electrodes |
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