Colloid and Polymer Science

, Volume 282, Issue 4, pp 407–411

Dynamic light scattering and cryogenic transmission electron microscopy investigations on metallo-supramolecular aqueous micelles: evidence of secondary aggregation

  • Oren Regev
  • Jean-François Gohy
  • Bas G. G. Lohmeijer
  • Sunil K. Varshney
  • Dominique H. W. Hubert
  • Peter M. Frederik
  • Ulrich S. Schubert
Original Contribution

Abstract

Metallo-supramolecular diblock copolymers consisting of a polystyrene (PS) block connected to a poly(ethylene oxide) (PEO) block by a bis(terpyridine)ruthenium complex (PS20-[Ru]-PEOy) were used to prepare aqueous micelles. The length of the PS block was kept constant, while two PEOs of different molecular weight were used. The resulting hydrated micelles and aggregates were characterized by a combination of cryogenic transmission electron microscopy (cryo-TEM) and dynamic light scattering measurements. The results were compared to those obtained for a covalent counterpart (PS22-b-PEO70). Cryogenic transmission electron microscopy allowed visualization of the PS core of the micelles. Moreover, the aggregates result from clustering of individual micelles.

Keywords

Metallo-supramolecular chemistry Block copolymers Micelles Cryogenic transmission electron microscopy Dynamic light scattering 

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Oren Regev
    • 1
  • Jean-François Gohy
    • 2
    • 3
  • Bas G. G. Lohmeijer
    • 2
  • Sunil K. Varshney
    • 4
  • Dominique H. W. Hubert
    • 5
  • Peter M. Frederik
    • 6
  • Ulrich S. Schubert
    • 2
  1. 1.Laboratory of Polymer ChemistryEindhoven University of Technology EindhovenThe Netherlands
  2. 2.Laboratory of Macromolecular Chemistry and Nanoscience, Center for NanomaterialsEindhoven University of Technology and Dutch Polymer InstituteEindhovenThe Netherlands
  3. 3.Unité de Chimie des Matériaux Inorganiques et OrganiquesUniversité catholique de Louvain Louvain-la-NeuveBelgium
  4. 4.Polymer Source Inc.DorvalCanada
  5. 5.FEI Electron Optics EindhovenThe Netherlands
  6. 6.Department of Pathology, Electron MicroscopyUniversity of LimburgMaastrichtThe Netherlands

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