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Issue 40, 2015
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The effect of Z-group modification on the RAFT polymerization of N-vinylpyrrolidone controlled by “switchable” N-pyridyl-functional dithiocarbamates

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Abstract

The ability of a RAFT agent to control the polymerization of a monomer is dictated by the structures of both the monomer and the RAFT agent. In this paper, the polymerization of N-vinylpyrrolidone was examined with a series of cyanomethyl N-aryl-N-pyridyldithiocarbamates [(4-R′Ph)N(py)C([double bond, length as m-dash]S)SCH2CN] varying in the substituent (R′) at the 4-position on the phenyl ring. The polymerization of N-vinylpyrrolidone was best controlled when R′ was methoxy; one of the least active RAFT agents in the series. The preservation of RAFT agent functionality was demonstrated by chain extension experiments with further N-vinylpyrrolidone. Again best control again was found for the RAFT agent with R′ = MeOPh. The utility of this RAFT agent was also proved with the preparation of poly(N-isopropylacrylamide)-block-poly(N-vinylpyrrolidone).

Graphical abstract: The effect of Z-group modification on the RAFT polymerization of N-vinylpyrrolidone controlled by “switchable” N-pyridyl-functional dithiocarbamates

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Publication details

The article was received on 02 Jul 2015, accepted on 21 Aug 2015 and first published on 24 Aug 2015


Article type: Paper
DOI: 10.1039/C5PY01021G
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Citation: Polym. Chem., 2015,6, 7119-7126

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    The effect of Z-group modification on the RAFT polymerization of N-vinylpyrrolidone controlled by “switchable” N-pyridyl-functional dithiocarbamates

    S. J. Stace, G. Moad, C. M. Fellows and D. J. Keddie, Polym. Chem., 2015, 6, 7119
    DOI: 10.1039/C5PY01021G

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