Anisotropic diffusion of polyelectrolyte chains within multilayer films

Academic Article

Abstract

  • We have found diffusion of polyelectrolyte chains within multilayer films to be highly anisotropic, with the preferential chain motion parallel to the substrate. The degree of anisotropy was quantified by a combination of fluorescence recovery after photobleaching and neutron reflectometry, probing chain diffusion in directions parallel and perpendicular to the substrate, respectively. Chain mobility was controlled by ionic strength of annealing solutions and steric hindrance to ionic pairing of interacting polyelectrolytes. © 2011 American Chemical Society.
  • Published In

  • ACS Macro Letters  Journal
  • Digital Object Identifier (doi)

    Author List

  • Xu L; Kozlovskaya V; Kharlampieva E; Ankner JF; Sukhishvili SA
  • Start Page

  • 127
  • End Page

  • 130
  • Volume

  • 1
  • Issue

  • 1