Complex coacervate core micelles from iron-based coordination polymers

J.Y. Wang, A. de Keizer, R.G. Fokkink, Y. Yan, M.A. Cohen Stuart, J. van der Gucht

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)

Abstract

Complex coacervate core micelles (C3Ms) from cationic poly(N-methyl-2-vinyl-pyridinium iodide)-b-poly(ethylene oxide) (P2MVP41-b-PEO205) and anionic iron coordination polymers are investigated in the present work. Micelle formation is studied by light scattering for both Fe(II)- and Fe(III)-containing C3Ms. At the stoichiometric charge ratio, both Fe(II)-C3Ms and Fe(III)-C3Ms are stable for at least 1 week at room temperature. Excess of iron coordination polymers has almost no effect on the formed Fe(II)-C3Ms and Fe(III)-C3Ms, whereas excess of P2MVP41-b-PEO205 copolymers in the solution can dissociate the formed micelles. Upon increasing salt concentration, the scattering intensity decreases. This decrease is due to both a decrease in the number of micelles (or an increase in CMC) and a decrease in aggregation number. The salt dependence of the CMC and the aggregation number is explained using a scaling argument for C3M formation. Compared with Fe(II)-C3Ms, Fe(III)-C3Ms have a lower CMC and a higher stability against dissociation by added salt.
Original languageEnglish
Pages (from-to)8313-8319
JournalThe Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical
Volume114
Issue number25
DOIs
Publication statusPublished - 2010

Keywords

  • diblock copolymer
  • block-copolymers
  • polyelectrolyte
  • nanoparticles
  • stability
  • lysozyme
  • ionomers
  • delivery
  • design
  • length

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