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@ARTICLE{Sokolowski:856726,
      author       = {Sokolowski, Marek and Bartsch, Christoph and Spiering,
                      Vivian J. and Prévost, Sylvain and Appavou, Marie-Sousai
                      and Schweins, Ralf and Gradzielski, Michael},
      title        = {{P}reparation of {P}olymer {B}rush {G}rafted {A}nionic or
                      {C}ationic {S}ilica {N}anoparticles: {S}ystematic
                      {V}ariation of the {P}olymer {S}hell},
      journal      = {Macromolecules},
      volume       = {51},
      number       = {17},
      issn         = {1520-5835},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2018-06077},
      pages        = {6936 - 6948},
      year         = {2018},
      abstract     = {Polymer brush grafted anionic SiO2@PMAA (poly(methacrylic
                      acid)) and cationic SiO2@PDMAEMA
                      (poly(2-(dimethylamino)ethyl methacrylate))
                      inorganic/polymer hybrid nanoparticles with different core
                      radii (dNP = 50–140 nm) and different amounts of attached
                      polymer were synthesized via surface-initiated atomic
                      transfer radical polymerization (ATRP). To avoid
                      irreversible aggregation, a three-step surface modification
                      had to be employed, thereby keeping the nanoparticles always
                      dispersed. For SiO2@PMAA the shell thickness changes with
                      the monomer concentration, while for SiO2@PDMAEMA the
                      grafting density was changed by monomer concentration and
                      the shell thickness remained constant. We assume that the
                      control over the grafting density relies on the nature of
                      the complexation potential of the PDMAEMA. The structural
                      characterization of the polymer grafted SiO2-NPs was done in
                      detail by different scattering methods combined with
                      thermogravimetric analysis, and details of the brush
                      characteristics are obtained by small-angle neutron
                      scattering (SANS). With this approach we were able to
                      produce silica nanoparticles with anionic and cationic
                      polymer shells, where the softness of the NPs can be
                      controlled by the amount of polymer, which are pH-responsive
                      and colloidally stable over a large pH range.},
      cin          = {JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)KWS1-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000444792400040},
      doi          = {10.1021/acs.macromol.8b01019},
      url          = {https://juser.fz-juelich.de/record/856726},
}