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  Synthesis and swelling behavior of a weak polyacid brush

Biesalski, M., Johannsmann, D., & Rühe, J. (2002). Synthesis and swelling behavior of a weak polyacid brush. The Journal of Chemical Physics, 117(10), 4988-4994. doi:10.1063/1.1490924.

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Biesalski, M.1, Author              
Johannsmann, Diethelm1, Author              
Rühe, Jürgen1, Author              
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: We describe the synthesis and the swelling behavior of a weak polyacid brush attached to a solid surface. Monolayers of poly methacrylic acid are generated by using self-assembled monolayers of an azo initiator and radical chain polymerization of methacrylic acid monomer at the surface of a planar substrate in situ. The thickness of the resulting surface- attached polyelectrolyte brush can be adjusted between 5 and 400 nm in the dry, collapsed state. The swelling behavior in water as a function of pH and salt concentration is investigated by multiple-angle null-ellipsometry. At high salt concentrations the brush thickness decreases due to electrostatic screening. At low concentration, however, an increase of thickness with ion concentration is found. (C) 2002 American Institute of Physics.

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Language(s): eng - English
 Dates: 2002-09-08
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28310
ISI: 000177574400045
DOI: 10.1063/1.1490924
 Degree: -

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Title: The Journal of Chemical Physics
  Other : J. Chem. Phys.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Institute of Physics
Pages: - Volume / Issue: 117 (10) Sequence Number: - Start / End Page: 4988 - 4994 Identifier: ISSN: 0021-9606
CoNE: https://pure.mpg.de/cone/journals/resource/954922836226