@article{KoetzBahnemannLucasetal.2004,
  author    = {Koetz, Joachim and Bahnemann, Jennifa and Lucas, Gordon and Tiersch, Brigitte and Kosmella, Sabine},
  title     = {Polyelectrolyte-modified microemulsions as new templates for the formation of nanoparticles},
  issn      = {0927-7757},
  year      = {2004},
  abstract  = {The paper is focused on the formation and redispersion of monodisperse BaSO4 nanoparticles in polyelectrolyte- modified microemulsions. It is shown that a cationic polyelectrolyte of low molar mass, e.g. poly(dially1dimethylammonium chloride) (PDADMAC), can be incorporated into the individual inverse microemulsion droplets (L2 phase) consisting of heptanol, water, and an amphoteric surfactant with a sulfobetaine head group. These PDADMAC- filled microemulsion droplets can be successfully used as a template phase for the nanoparticle formation. The monodisperse BaSO4 nanoparticles are produced by a simple mixing procedure and can be redispersed after solvent evaporation without a change in particle dimensions. Dynamic and electrophoretical light scattering in combination with sedimentation experiments in the analytical Ultracentrifuge of the redispersed powder show polyelectrolyte-stabilized nanoparticles with diameters of about 6 nm. The polyelectrolyte shows a "size control effect", which can be explained by the polyelectrolyte-surfactant interactions in relation to the polyelectrolyte-nanoparticle interactions during the particle growth, solvent evaporation and redispersion process. However, the approach used here opens away to produce different types of polyelectrolyte-stabilized nanoparticles (including rare metals, semiconductors, carbonates or oxides) of very small dimensions. (C) 2004 Elsevier B.V. All rights reserved},
  language  = {en}
}
@article{RobertsonHellwegTierschetal.2004,
  author    = {Robertson, Daniela and Hellweg, Thomas and Tiersch, Brigitte and Koetz, Joachim},
  title     = {Polymer-induced structural changes in lecithin/sodium dodecyl sulfate-based multilamellar vesicles},
  issn      = {0021-9797},
  year      = {2004},
  abstract  = {Aqueous concentrated lecithin mixtures (asolectin from soybean) show typical lamellar liquid crystalline behavior and the individual lamellae tend to form spherical supramolecular structures, i.e., multilamellar vesicles. When part of the lecithin is replaced by the anionic surfactant sodium dodecyl sulfate (SIDS), the compact multilamellar vesicles disappear and the viscosity decreases. By adding oly(diallyldimethylammonium chloride) (PDADMAC) to the lecithin/SDS system, the formation of multilamellar vesicles can be induced again and the viscosity increases. However, one characteristic feature of these polymer-modified systems is a temperature-dependent phase transition from a compact multilamellar vesicle phase to a more swollen liquid crystalline phase. The polymer-modified multilamellar compact vesicles are of interest for utilization as new thermosensitive drug delivery systems. (C) 2003 Elsevier Inc. All rights reserved},
  language  = {en}
}
@article{KoetzBahnemannKosmella2004,
  author    = {Koetz, Joachim and Bahnemann, Jennifa and Kosmella, Sabine},
  title     = {The influence of a cationic polyelectrolyte on the inverse micellar region of the ternary system sulfobetaine/ water/alcohol},
  issn      = {0887-624X -},
  year      = {2004},
  language  = {en}
}
@article{KoetzGuentherKosmellaetal.2004,
  author    = {Koetz, Joachim and G{\"u}nther, Claudia and Kosmella, Sabine and Kleinpeter, Erich and Wolf, Gunter},
  title     = {Polyelectrolyte induced structural changes in the isotropic phase of the system sulfobetaine/pentanol/toluene/ water},
  year      = {2004},
  language  = {en}
}
@article{RobertsonHellwegTierschetal.2004,
  author    = {Robertson, Daniela and Hellweg, Thomas and Tiersch, Brigitte and Koetz, Joachim},
  title     = {Polymer induced structural changes in lecithin/SDS-based multilamellar vesicles},
  issn      = {0021-9797},
  year      = {2004},
  language  = {en}
}