Surface organization of single hyperbranched polymer molecules, as studied by atomic force microscopy

P. Viville*, A. Deffieux, M. Schappacher, Jean-Luc Bredas, R. Lazzaroni

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The recent emergence of hyperbranched polymers has opened the door to the design of a large variety of new chain architectures that promise to be strong competitors for dendrimers in a variety of potential applications. For instance, «comb-like» polymers can be obtained from poly(chloroethyl vinyl ether)-g-polystyrene (PCEVE-g-PS) copolymers, with excellent control over the dimensions of the polystyrene branches and the PCEVE backbone. In this work, the nanometer scale organization of these materials is studied by means of Atomic Force Microscopy (AFM). We focus on the influence of the intrinsic molecular architecture of the hyperbranched PCEVE-g-PS on the organization of the material. Several parameters such as sample preparation conditions (the nature of the solvent and the substrate, the solution concentration) and annealing of the samples are also taken into account. In the case of very thin deposits, we observe a layer-by-layer organization (the height of one monolayer corresponding to ~7 nm). On the free surface, it is possible to image single polymer molecules and to analyze their size in terms of the polymer molecular weight. In thicker deposits, the molecules are found to adopt an extended conformation and to form lamellar arrangements.

Original languageEnglish (US)
Pages (from-to)311-314
Number of pages4
JournalMaterials Science and Engineering C
Volume15
Issue number1-2
DOIs
StatePublished - Sep 19 2001

Keywords

  • AFM
  • Hyperbranched polymers
  • Self-assembled molecules

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Surface organization of single hyperbranched polymer molecules, as studied by atomic force microscopy'. Together they form a unique fingerprint.

Cite this