Communication

Spatiotemporally Controlled Formation of Two-Component Counterpropagating Lateral Graft Density Gradients of Mixed Polymer Brushes on Planar Au Surfaces†

  1. X. J. Wang,
  2. P. W. Bohn

Article first published online: 24 JAN 2007

DOI: 10.1002/adma.200601516

Issue

Advanced Materials

Advanced Materials

Volume 19, Issue 4, pages 515–520, February, 2007

Additional Information

How to Cite

Wang, X. and Bohn, P. (2007), Spatiotemporally Controlled Formation of Two-Component Counterpropagating Lateral Graft Density Gradients of Mixed Polymer Brushes on Planar Au Surfaces. Advanced Materials, 19: 515–520. doi: 10.1002/adma.200601516

Author Information

  1. Department of Chemistry and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA

  1. †

    This work was supported by the National Science Foundation through grant CHE 0451661 and by the Department of Energy through grant DE FG02 88ER13949. Ellipsometry data were obtained in the Laser and Spectroscopy Facility at the Frederick Seitz Materials Research Laboratory. The Center for Microanalysis of Materials is partially supported by the Department of Energy through grant DE FG02 91ER45439.

Publication History

  1. Issue published online: 9 FEB 2007
  2. Article first published online: 24 JAN 2007
  3. Manuscript Revised: 29 SEP 2006
  4. Manuscript Received: 7 JUL 2006

Funded by

  • National Science Foundation. Grant Number: CHE 0451661
  • Department of Energy. Grant Number: DE FG02 88ER13949
  • Department of Energy. Grant Number: DE FG02 91ER45439

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Keywords:

  • Atom-transfer radical polymerization;
  • Electrochemical desorption;
  • Gold;
  • Polymer brushes;
  • Polymeric materials

Graphical Abstract

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A facile method to template mixed polymer-brush gradients onto a Au surface using a “grafting-from” atom-transfer radical polymerization coupled with an in-plane electrochemical-potential gradient is developed and studied (see figure), PNIPAAm: poly(N-isopropylacrylamide); PHEMA: poly(2-hydroxyethyl methacrylate). Polymer-brush gradients can be easily formed with tunable slope and transition-region width in a wide range of physical sizes by combining these methods.

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