% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Zinn:824279,
      author       = {Zinn, Thomas and Willner, Lutz and Pipich, Vitaliy and
                      Richter, Dieter and Lund, Reidar},
      title        = {{M}olecular {E}xchange {K}inetics of {M}icelles: {C}orona
                      {C}hain {L}ength {D}ependence},
      journal      = {ACS Macro Letters},
      volume       = {5},
      number       = {7},
      issn         = {2161-1653},
      address      = {Washington, DC},
      publisher    = {ACS},
      reportid     = {FZJ-2016-06898},
      pages        = {884 - 888},
      year         = {2016},
      abstract     = {The rate of molecular exchange in diblock copolymer
                      micelles is strongly dependent on the chain length of the
                      core-forming insoluble block. Less is known about the
                      influence of the soluble block forming the micellar corona.
                      In this study we present a time-resolved small angle neutron
                      scattering (TR-SANS) study exploring systematically the
                      effect of corona chain length on the dynamics of chain
                      exchange. As a model system we have taken amphiphilic AB
                      diblock copolymers of the type C27H55-poly(ethylene oxide)x
                      (C27–PEOx) with varying x between 4 and 36 kg/mol in
                      aqueous solution in which well-defined spherical micelles
                      with partially crystalline cores are formed. The TR-SANS
                      results show that the chain exchange slows down considerably
                      upon increasing PEO molecular weight, while the
                      characteristic “attempt time” constant, τ0, was found
                      to increase with a power law dependence τ0 ∼ MPEO9/5. The
                      results are in excellent agreement with the Halperin and
                      Alexander model1 and can be attributed to a reduced
                      diffusion rate through the micellar corona. Our results
                      clearly demonstrate that the rate for molecular exchange is
                      not directly coupled to the solubility of the amphiphile and
                      the critical micellar concentration, as has previously been
                      indicated.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
                      ICS-1 / JCNS-2 / PGI-4},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)ICS-1-20110106 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106},
      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},
      UT           = {WOS:000380296000022},
      doi          = {10.1021/acsmacrolett.6b00395},
      url          = {https://juser.fz-juelich.de/record/824279},
}