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

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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]-PEO y ) 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.

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Acknowledgements

The authors thank the Dutch Polymer Institute, NWO and the Fonds der Chemischen Industrie for financial support. J.F.G. thanks the FNRS and the European Science Foundation SUPERNET program. We thank Dieter Schubert (University of Frankfurt) for helpful comments.

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Authors and Affiliations

  1. Laboratory of Polymer Chemistry, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands

    Oren Regev

  2. Laboratory of Macromolecular Chemistry and Nanoscience, Center for Nanomaterials, Eindhoven University of Technology and Dutch Polymer Institute, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands

    Jean-François Gohy, Bas G. G. Lohmeijer & Ulrich S. Schubert

  3. Unité de Chimie des Matériaux Inorganiques et Organiques, Université catholique de Louvain, Place L. Pasteur 1, 1348, Louvain-la-Neuve, Belgium

    Jean-François Gohy

  4. Polymer Source Inc., 771 Lajoie Street, Dorval, Québec, H9P 1G7, Canada

    Sunil K. Varshney

  5. FEI Electron Optics, Application Laboratory Building AAE, P.O. Box 80066, 5600 KA, Eindhoven, The Netherlands

    Dominique H. W. Hubert

  6. Department of Pathology, Electron Microscopy, University of Limburg, P.O. Box 616, 6200 MD, Maastricht, The Netherlands

    Peter M. Frederik

Authors
  1. Oren Regev
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  2. Jean-François Gohy
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  3. Bas G. G. Lohmeijer
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  4. Sunil K. Varshney
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  5. Dominique H. W. Hubert
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  6. Peter M. Frederik
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  7. Ulrich S. Schubert
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Correspondence to Ulrich S. Schubert.

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Regev, O., Gohy, JF., Lohmeijer, B.G.G. et al. Dynamic light scattering and cryogenic transmission electron microscopy investigations on metallo-supramolecular aqueous micelles: evidence of secondary aggregation. Colloid Polym Sci 282, 407–411 (2004). https://doi.org/10.1007/s00396-003-0975-1

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  • DOI: https://doi.org/10.1007/s00396-003-0975-1

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