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Synthesis of a poly(p-styrenesulfonate) brush via surface- initiated polymerization

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons47645

Biesalski,  M.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48674

Rühe,  Jürgen
MPI for Polymer Research, Max Planck Society;

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Zitation

Biesalski, M., & Rühe, J. (2003). Synthesis of a poly(p-styrenesulfonate) brush via surface- initiated polymerization. Macromolecules, 36(4), 1222-1227.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-6280-7
Zusammenfassung
The synthesis of molecularly thin poly(p-styrenesulfonate) monolayers as an example for a negatively charged polyelectrolyte brush covalently attached to a planar solid surface is described. The polymer monolayers are generated directly at the surface of the substrate by using self- assembled monolayers of an azo initiator and radical chain polymerization of p-styrenesulfonate ethyl ester (ESS) monomer in situ. This "grafting from" approach yields surface-bound poly(p-styrenesulfonate ethyl ester) (PESS) molecules with high molecular weights and with high graft densities of the attached chains. The PESS monolayers can be transformed into a charged poly(p-styrenesulfonate) (PSS) monolayer through a polymer- analogous saponification reaction under mild conditions, and the reaction can be carried out to quantitative conversion. The thickness of the polyelectrolyte brush can be controlled from 2 to more than 35 nm in the dry, collapsed state.