Discovery of an Anionic Polymerization Mechanism for High Molecular Weight PPV Derivatives via the Sulfinyl Precursor Route

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Inge Cosemans; Lieve Hontis; David Van Den Berghe; Arne Palmaerts; Jimmy Wouters; Thomas J. Cleij; Laurence Lutsen; Wouter Maes; Tanja Junkers; Dirk J. M. Vanderzande

2011

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  • The polymerization of PPV via the sulfinyl precursor route has been investigated with respect to its mechanism
  • An increase in the reaction temperature induced an increase in the overall yield alongside with a reduction of the average molecular weight of the polymer
  • Upon changing the monomer concentration in solution before addition of the base NatBuO, an increase in molecular weight is observed, signifying that the polymerization is faster than the mixing of the two reaction components
  • With polymerizations in presence of the radical quencher TEMPO, the anionic polymerization mechanism could unambiguously be proven

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