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Overview

A method to initiate Kumada catalyst-transfer polycondensation from surface-bound Ni initiators was developed. The first generation of externally addable Ni initiators was supported by monodentate phosphorous ligands. Conjugated polymer brushes of regioregular head-to-tail poly(3-alkylthiophenes) (P3AT) were grown via surface initiated polycondensation of 2-bromo-5-chloromagnesio-3-alkylthiophene from photo-cross-linked poly-4-bromostyrene films. Exposure of the initiator layers to the monomer solution leads to selective chain growth polycondensation of the monomer from the surface, resulting into P3AT brushes in a very economical way.

References

  • Khanduyeva, N.; Senkovsky, V.; Beryozkina, T.; Horecha, M.; Stamm, M.; Uhrich, C.; Riede, M.; Leo, K.; Kiriy, A.
    Surface engineering using kumada catalyst-transfer polycondensation (KCTP): Preparation and strcturing of poly(3-hexylthiophene)-based graft copolymer brushes more
    Journal of the American Chemical Society 131 (2009) 153–161

  • Beryozkina, T.; Boyko, K.; Khanduyeva, N.; Senkovsky, V.; Horecha, M.; Oertel, U.; Simon, F.; Stamm, M.; Kiriy, A.
    Grafting of polyfluorene by surface-initiated suzuki polycondensation more
    Angewandte Chemie - International Edition 48 (2009) 2695-2698

  • Khanduyeva, N.; Senkovsky, V.; Beryozkina, T.; Bocharova, V.; Simon, F.; Nitschke, M.; Stamm, M.; Grötzschel, R.; Kiriy, A.
    Grafting of poly(3-hexylthiophene) from poly(4-bromostyrene) films by kumada catalyst-transfer polycondendation: Revealing of the composite films structure more
    Macromolecules 41 (2008) 7383-7389