Compositional Mapping of Polymer Surfaces by Chemical Force Microscopy Down to the Nanometer Scale: Reactions in Block Copolymer Microdomains

Holger Schönherr, C.L. Feng, N. Tomczak, Gyula J. Vancso

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)

Abstract

The laterally resolved analysis of the chemical surface composition of surface-treated block copolymers by atomic force microscopy (AFM) pull-off force mapping in the force volume (FV) mode and the automated analysis of the FV data is discussed. Poly(tert-butyl acrylate) (PtBA) microdomains residing in a polystyrene (PS) matrix at the surface of cyclohexane-treated polystyrene-block-poly(tert-butyl acrylate) (PtBA-b-PS) block copolymer thin films were domain-selectively deprotected, activated and chemically modified, as also shown by fluorescence microscopy. AFM pull-off force mapping in conjunction with an automated analysis of the data provided real space evidence for the successful conversion of reactive esters located in the PtBA domains and showed that AFM and related approaches, such as chemical force microscopy (CFM), can indeed contribute to assess changes in heterogeneous surface chemical composition of polymers down to sub-50 nm length scales.
Original languageUndefined
Pages (from-to)149-157
Number of pages9
JournalMacromolecular symposia
Volume230
Issue number1
DOIs
Publication statusPublished - 2005

Keywords

  • chemical force microscopy (CFM)
  • local chemical analysis
  • Block copolymers
  • nanoheterogeneity
  • Surface chemistry
  • METIS-230193
  • IR-72024

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