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@ARTICLE{Vishnevetskaya:862744,
      author       = {Vishnevetskaya, Natalya S. and Hildebrand, Viet and
                      Nizardo, Noverra M. and Ko, Chia-Hsin and Di, Zhenyu and
                      Radulescu, Aurel and Barnsley, Lester and Müller-Buschbaum,
                      Peter and Laschewsky, André and Papadakis, Christine M.},
      title        = {{A}ll-{I}n-{O}ne “{S}chizophrenic” {S}elf-{A}ssembly of
                      {O}rthogonally {T}uned {T}hermoresponsive {D}iblock
                      {C}opolymers},
      journal      = {Langmuir},
      volume       = {35},
      number       = {19},
      issn         = {1520-5827},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {FZJ-2019-02986},
      pages        = {6441 - 6452},
      year         = {2019},
      abstract     = {Smart, fully orthogonal switching was realized in a highly
                      biocompatible diblock copolymer system with variable
                      trigger-induced aqueous self-assembly. The polymers are
                      composed of nonionic and zwitterionic blocks featuring lower
                      and upper critical solution temperatures (LCSTs and UCSTs).
                      In the system investigated, diblock copolymers from
                      poly(N-isopropyl methacrylamide) (PNIPMAM) and a
                      poly(sulfobetaine methacrylamide), systematic variation of
                      the molar mass of the latter block allowed for shifting the
                      UCST of the latter above the LCST of the PNIPMAM block in a
                      salt-free condition. Thus, successive thermal switching
                      results in “schizophrenic” micellization, in which the
                      roles of the hydrophobic core block and the hydrophilic
                      shell block are interchanged depending on the temperature.
                      Furthermore, by virtue of the strong electrolyte-sensitivity
                      of the zwitterionic polysulfobetaine block, we succeeded to
                      shift its UCST below the LCST of the PNIPMAM block by adding
                      small amounts of an electrolyte, thus inverting the pathway
                      of switching. This superimposed orthogonal switching by
                      electrolyte addition enabled us to control the switching
                      scenarios between the two types of micelles (i) via an
                      insoluble state, if the LCST-type cloud point is below the
                      UCST-type cloud point, which is the case at low salt
                      concentrations or (ii) via a molecularly dissolved state, if
                      the LCST-type cloud point is above the UCST-type cloud
                      point, which is the case at high salt concentrations.
                      Systematic variation of the block lengths allowed for
                      verifying the anticipated behavior and identifying the
                      molecular architecture needed. The versatile and tunable
                      self-assembly offers manifold opportunities, for example,
                      for smart emulsifiers or for sophisticated carrier systems.},
      cin          = {JCNS-FRM-II / Neutronenstreuung ; JCNS-1 / MLZ},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-588b)4597118-3},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31017439},
      UT           = {WOS:000468243500023},
      doi          = {10.1021/acs.langmuir.9b00241},
      url          = {https://juser.fz-juelich.de/record/862744},
}