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@ARTICLE{Knig:861056,
      author       = {König, Nico and Willner, Lutz and Pipich, Vitaliy and
                      Zinn, Thomas and Lund, Reidar},
      title        = {{C}ooperativity during {M}elting and {M}olecular {E}xchange
                      in {M}icelles with {C}rystalline {C}ores},
      journal      = {Physical review letters},
      volume       = {122},
      number       = {7},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2019-01640},
      pages        = {078001},
      year         = {2019},
      abstract     = {Molecular exchange processes are important equilibration
                      and transport mechanisms in both synthetic and biological
                      self-assembled systems such as micelles, vesicles, and
                      membranes. Still, these processes are not entirely
                      understood, in particular the effect of crystallinity and
                      the interplay between cooperative melting processes and
                      chain exchange. Here we focus on a set of simple polymer
                      micelles formed by binary mixtures of poly(ethylene
                      oxide)-mono-n-alkyl-ethers (Cn−PEO5) which allows the
                      melting point to be tuned over a wide range. We show that
                      the melting transition is cooperative in the confined 4–5
                      nm micellar core, whereas the exchange process is widely
                      decoupled and unimeric in nature. As confirmed by
                      differential scanning calorimetry, the total activation
                      energy for ejecting a molecule out of the micellar core
                      below the melting point is the sum of the enthalpy of fusion
                      and the corresponding activation energy in the melt state.
                      This suggests that a “local, single-chain melting
                      process” preludes the molecular diffusion out of the
                      micelle during chain exchange.},
      cin          = {JCNS-1 / ICS-1 / JCNS-FRM-II},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)ICS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000459311800010},
      doi          = {10.1103/PhysRevLett.122.078001},
      url          = {https://juser.fz-juelich.de/record/861056},
}