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@ARTICLE{Uchman:22571,
      author       = {Uchman, M. and Stepanek, M. and Prevost, S. and Angelov, B.
                      and Bednar, J. and Appavou, M.-S. and Gradzielski, M. and
                      Prochazka, K.},
      title        = {{C}oassembly of {P}oly(ethylene
                      oxide)-block-poly(methacrylic acis) and
                      {N}-{D}odecylpyridinium {C}hloride in {A}queous {S}olutions
                      {L}eading to {O}rdered {M}icellar {A}ssemblies within
                      {C}opolymer {A}ggregates},
      journal      = {Macromolecules},
      volume       = {45},
      issn         = {0024-9297},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {PreJuSER-22571},
      pages        = {6471 - 6480},
      year         = {2012},
      note         = {The authors acknowledge the financial support from the
                      Ministry of Education of the Czech Republic (long-term
                      Research Project No. MSM0021620857) and the Grant Agency of
                      the Czech Republic (Grants P208/10/0353, P208/12/P236,
                      P205/11/J043, and P106/12/0143) and German Academic Exchange
                      Service DAAD (Grants 2B08021 and D0804221 PPP-CZ-09-10, PKZ:
                      50016729). This research project has been supported by the
                      European Commission under the 7th Framework Programme
                      through the Key Action: Strengthening the European Research
                      Area, Research Infrastructures. Contract: 226507 (NMI3). For
                      allocation of beam time we are grateful to ILL (Grenoble,
                      France), ESFR (Grenoble, France), and Diamond (Didcot, UK).
                      BA. acknowledges user support from the Diamond Light Source
                      (Didcot, Oxfordshire, UK; Proposal SM3313, Beamline I22) and
                      ESRF (Grenoble, France, Proposal SC3113, Beamline ID02) and
                      thanks Drs. S. Filippov, P. Stepanek, N. Terrill, J. Gummel,
                      and T. Narayanan for cooperation and support.},
      abstract     = {Formation of polyelectrolyte-surfactant (PE-S) complexes of
                      poly(ethylene oxide)-block-poly(methacrylic acid)
                      (PEO705-PMAA(476)) and N-dodecylpyridinium chloride (DPCl)
                      in aqueous solution was studied by static and dynamic light
                      scattering (SLS, DLS), small-angle neutron scattering
                      (SANS), small-angle X-ray scattering (SAXS), and cryogenic
                      transmission electron microscopy (cryo-TEM). While it was
                      found previously [Macromolecules 1997, 30, 3519] by
                      microcalorimetric titration that in a similar system
                      (PEO176-PMAA(186)) crystallization of aliphatic tails of
                      N-dodecylpyridinium bromide did not occur, in our system it
                      was evidenced by SAXS that upon addition of DPCl to fully
                      ionized PEO705-PMAA(476) the ordered arrangement of the
                      surfactant occurs in a certain range of PEO705-PMAA(476)
                      concentrations and surfactant-to-polyelectrolyte charge
                      molar ratio (Z). Our data suggest a four-step process in the
                      behavior of the PEO705-PMAA(476)/DPCl system: (I)
                      coexistence of loose aggregates of electrostatically bound
                      surfactants to PMAA block with free and almost unperturbed
                      copolymer coils at Z << 1, (ii) formation of aggregates
                      containing ill-defined cores formed by DPCl micelles
                      attached to coiled PMAA chains (beads-on-a-string
                      nanoparticles) in the range around Z = 0.5, (iii) formation
                      of compact core-shell nanoparticles with a core formed by
                      densely packed ordered (crystalline) DPCl micelles and PEO
                      shell starting slightly before charge equimolarity (Z = 1),
                      and (iv) the region of coexistence of the core shell
                      nanoparticles with free DPCl micelles in excess above
                      equimolarity (Z >> 1). In the region around Z = 0.5, the
                      nanoparticles with nonordered cores coexist in a mixture
                      either with a fraction free chains and large swollen
                      nanoparticles decorated by surfactant micelles (at lower Z)
                      or with the core shell nanoparticles (at higher Z). PE-S
                      complexes were characterized in detail in terms of molar
                      mass, size, shape, and internal structure.},
      keywords     = {J (WoSType)},
      cin          = {ICS-1 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {BioSoft: Makromolekulare Systeme und biologische
                      Informationsverarbeitung (FUEK505) / 544 - In-house Research
                      with PNI (POF2-544) / NMI3 - Integrated Infrastructure
                      Initiative for Neutron Scattering and Muon Spectroscopy
                      (226507)},
      pid          = {G:(DE-Juel1)FUEK505 / G:(DE-HGF)POF2-544 /
                      G:(EU-Grant)226507},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      shelfmark    = {Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000307988500018},
      doi          = {10.1021/ma301510j},
      url          = {https://juser.fz-juelich.de/record/22571},
}