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Issue 44, 2018
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Addressing the role of triphenylphosphine in copper catalyzed ATRP

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A new Atom Transfer Radical Polymerization (ATRP) process with triphenylphosphine (PPh3) and [CuIIMe6TREN]2+ as the catalyst system is reported. It is shown that PPh3 can act not only as an efficient reducing agent (RA) but also as a supplemental activator (SA). The kinetics and mechanism of SARA ATRP of methyl acrylate (MA) in DMSO and DMSO/H2O (90/10 v/v) were investigated in detail. The polymers presented controlled molecular weight, very low dispersity (Đ ≈ 1.03), and well-defined chain-end functionality. UV-Vis and electrochemical studies were performed to understand the role of PPh3 and the CuIIBr2/Me6TREN complex in MA polymerization. It is demonstrated that the presence of PPh3 does not affect the stability of the [BrCuIIMe6TREN]+ deactivator. The reported results reveal the high versatility of PPh3 in ATRP, which, besides being commonly used in iron-mediated polymerizations, can also be employed as a SARA agent in copper-based ATRP systems.

Graphical abstract: Addressing the role of triphenylphosphine in copper catalyzed ATRP

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Publication details

The article was received on 24 Aug 2018, accepted on 08 Oct 2018 and first published on 09 Oct 2018

Article type: Paper
DOI: 10.1039/C8PY01245H
Citation: Polym. Chem., 2018,9, 5348-5358

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    Addressing the role of triphenylphosphine in copper catalyzed ATRP

    J. R. C. Costa, J. R. Góis, F. De Bon, A. C. Serra, T. Guliashvili, A. A. Isse, A. Gennaro and J. F. J. Coelho, Polym. Chem., 2018, 9, 5348
    DOI: 10.1039/C8PY01245H

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