@article{KindPlamperGoebeletal.2009,
  author    = {Kind, Lucy and Plamper, Felix A. and Goebel, Ronald and Mantion, Alexandre and Mueller, Axel H. E. and Pieles, Uwe and Taubert, Andreas and Meier, Wolfgang P.},
  title     = {Silsesquioxane/polyamine nanoparticle-templated formation of star- or raspberry-like silica nanoparticles},
  issn      = {0743-7463},
  doi       = {10.1021/La900229n},
  year      = {2009},
  abstract  = {Silica is an important mineral in biology and technology, and many protocols have been developed for the synthesis of complex silica architectures. The current report shows that silsesquioxane nanoparticles carrying polymer arms on their surface are efficient templates for the fabrication of silica particles with a star- or raspberry-like morphology. The shape of the resulting particles depends on the chemistry of the polymer arms. With poly(N,N- dimethylaminoethyl methacrylate) (PDMAEMA) arms, spherical particles with a less electron dense core form. With poly {[2- (methacryloyloxy)ethyl] trimethylammonium iodide} (PMETAI), star- or raspberry-like particles form. Electron microscopy, electron tomography, and small-angle X-ray scattering show that the resulting silica particles have a complex structure, where a silsequioxane nanoparticle carrying the polymer arms is in the center. Next is a region that is polymer-rich. The outermost region of the particle is a silica layer, where the outer parts of the polymer arms are embedded. Time- resolved zeta-potential and pH measurements, dynamic light scattering, and electron microscopy reveal that silica formation proceeds differently if PDMAEMA is exchanged for PMETAI.},
  language  = {en}
}
@article{SchlaadYouSigeletal.2009,
  author    = {Schlaad, Helmut and You, Liangchen and Sigel, Reinhard and Smarsly, Bernd and Heydenreich, Matthias and Mantion, Alexandre and Masic, Admir},
  title     = {Glycopolymer vesicles with an asymmetric membrane},
  issn      = {1359-7345},
  doi       = {10.1039/B820887e},
  year      = {2009},
  abstract  = {Direct dissolution of glycosylated polybutadiene-poly(ethylene oxide) block copolymers can lead to the spontaneous formation of vesicles or membranes, which on the outside are coated with glucose and on the inside with poly(ethylene oxide).},
  language  = {en}
}
@article{ShkilnyyBrandtMantionetal.2009,
  author    = {Shkilnyy, Andriy and Brandt, Jessica and Mantion, Alexandre and Paris, Oskar and Schlaad, Helmut and Taubert, Andreas},
  title     = {Calcium phosphate with a channel-like morphology by polymer templating},
  issn      = {0897-4756},
  doi       = {10.1021/Cm803244z},
  year      = {2009},
  abstract  = {Calcium phosphate mineralization from aqueous solution in the presence of organic growth modifiers has been intensely studied in the recent past. This is mostly due to potential applications of the resulting composites in the biomaterials field. Polymers in particular are efficient growth modifiers. As a result, there has been a large amount of work on polymeric growth modifiers. Interestingly, however, relatively little work has been done on polycationic additives. The current paper shows that poly(ethylene oxide)b-poly(L-lysine) block copolymers lead to an interesting morphology of calcium phosphate precipitated at room temperature and subjected to a mild heat treatment at 85 degrees C. Electron microscopy, synchrotron X-ray diffraction, and porosity analysis show that a (somewhat) porous material with channel-like features forms. Closer inspection using transmission electron microscopy shows that the channels are probably not real channels. Much rather the morphology is the result of the aggregation of ca. 100-nm-sized rodlike primary particles, which changes upon drying to exhibit the observed channel-like features. Comparison experiments conducted in the absence of polymer and with poly(ethylene oxide)-b-poly(L-glutamate) show that these features only form in the presence of the polycationic poly(L-lysine) block, suggesting a distinct interaction of the polycation with either the crystal or the phosphate ions prior to mineralization.},
  language  = {en}
}