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Redox-Responsive Polymer Brushes Grafted from Polystyrene Nanoparticles by Means of Surface Initiated Atom Transfer Radical Polymerization

Mazurowski, M. ; Gallei, M. ; Li, J. ; Didzoleit, Haiko ; Stühn, B. ; Rehahn, M. :
Redox-Responsive Polymer Brushes Grafted from Polystyrene Nanoparticles by Means of Surface Initiated Atom Transfer Radical Polymerization.
In: MACROMOLECULES, 45 (22) pp. 8970-8981.
[Artikel], (2012)

Kurzbeschreibung (Abstract)

Well-defined poly(2-(methacryloyloxy)ethyl ferrocenecarboxylate) (PFcMA) brushes were synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP) on cross-linked polystyrene particles. The ATRP of FcMA monomer was reinvestigated leading to molar masses up to 130 kg mol(-1) with a good reaction control and high monomer conversion (91%). The SI-ATRP was done with different amounts of initiator in the PS particle shell leading to PFcMA surface conformations from mushroom like to dense brush like polymers, which could be confirmed by dynamic light scattering (DLS) experiments. Redox-responsive behavior of the PFcMA, shell was investigated by DLS and cyclic voltammetry (CV) measurements indicating a tremendous increase in the hydrodynamic volume of the ferrocene-containing shell. The transformation of PFcMA-grafted PS particles to magnetic iron oxides after thermal treatment could be investigated by SQUID magnetization measurements showing the typical hysteresis for ferromagnetic material.

Typ des Eintrags: Artikel
Erschienen: 2012
Autor(en): Mazurowski, M. ; Gallei, M. ; Li, J. ; Didzoleit, Haiko ; Stühn, B. ; Rehahn, M.
Titel: Redox-Responsive Polymer Brushes Grafted from Polystyrene Nanoparticles by Means of Surface Initiated Atom Transfer Radical Polymerization
Sprache: Englisch
Kurzbeschreibung (Abstract):

Well-defined poly(2-(methacryloyloxy)ethyl ferrocenecarboxylate) (PFcMA) brushes were synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP) on cross-linked polystyrene particles. The ATRP of FcMA monomer was reinvestigated leading to molar masses up to 130 kg mol(-1) with a good reaction control and high monomer conversion (91%). The SI-ATRP was done with different amounts of initiator in the PS particle shell leading to PFcMA surface conformations from mushroom like to dense brush like polymers, which could be confirmed by dynamic light scattering (DLS) experiments. Redox-responsive behavior of the PFcMA, shell was investigated by DLS and cyclic voltammetry (CV) measurements indicating a tremendous increase in the hydrodynamic volume of the ferrocene-containing shell. The transformation of PFcMA-grafted PS particles to magnetic iron oxides after thermal treatment could be investigated by SQUID magnetization measurements showing the typical hysteresis for ferromagnetic material.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: MACROMOLECULES
Band: 45
(Heft-)Nummer: 22
Ort: 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Verlag: AMER CHEMICAL SOC
Fachbereich(e)/-gebiet(e): Fachbereich Physik > Festkörperphysik, Condensed matter physics > Experimentelle Physik kondensierter Materie
Fachbereich Physik > Festkörperphysik, Condensed matter physics
Fachbereich Physik
Hinterlegungsdatum: 07 Jan 2013 10:51
ID-Nummer: 10.1021/ma3020195
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