Article

Switching and structuring of binary reactive polymer brush layers

  1. Leonid Ionov1,
  2. Manfred Stamm1,
  3. Sergiy Minko2,
  4. Frank Hoffmann3,
  5. Thomas Wolff3

Article first published online: 4 MAY 2004

DOI: 10.1002/masy.200450626

Issue

Macromolecular Symposia

Macromolecular Symposia

Special Issue: Reactive Polymers 2003

Volume 210, Issue 1, pages 229–235, March 2004

Additional Information

How to Cite

Ionov, L., Stamm, M., Minko, S., Hoffmann, F. and Wolff, T. (2004), Switching and structuring of binary reactive polymer brush layers. Macromolecular Symposia, 210: 229–235. doi: 10.1002/masy.200450626

Author Information

  1. 1

    Institut für Polymerforschung Dresden, Hohe Strasse 6, Dresden, 01069, Germany

  2. 2

    Department of Chemistry, Clarkson University, Potsdam, New York 13699-5614, USA

  3. 3

    Institut für Physikalische Chemie, Technische Universität Dresden, 01062 Dresden, Germany

Publication History

  1. Issue published online: 4 MAY 2004
  2. Article first published online: 4 MAY 2004

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Keywords:

  • networks;
  • photochemistry;
  • stimuli-sensitive polymers surfaces;
  • thin films

Abstract

Switchable binary polymer brushes grafted to Si-wafers were prepared from hydrophilic and hydrophobic polymer components. When exposed to solvents, either the hydrophobic or the hydrophilic component extends in to the liquid phase, depending on the polarity of the solvent. The hydrophilic component was poly-2-vinylpyridine; the hydrophobic component was made photocrosslinkable in that a polystyrene copolymer containing a photodimerizing chromophore was used. In this system surfaces differing in water contact angle between 60° and 100° can be produced by variation of the solvent. The chromophore was phenylindene, which forms crosslinks upon direct UV-irradiation. Therefore, the polystyrene component can be fixed in the extended or collapsed state. It will be shown that by irradiation through an appropriate mask, surfaces can be structured and the structures fixed.

In both the systems structural patterns differing in surface properties were produced and fixed photochemically.

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