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@ARTICLE{Krutyeva:279669,
      author       = {Krutyeva, M. and Bras, Ana and Antonius, W. and Hövelmann,
                      Claas and Poulos, A. S. and Allgaier, J. and Radulescu, A.
                      and Lindner, P. and Pyckhout-Hintzen, W. and Wischnewski, A.
                      and Richter, D.},
      title        = {{A}ssociation {B}ehavior, {D}iffusion, and {V}iscosity of
                      {E}nd-{F}unctionalized {S}upramolecular {P}oly(ethylene
                      glycol) in the {M}elt {S}tate},
      journal      = {Macromolecules},
      volume       = {48},
      number       = {24},
      issn         = {1520-5835},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2015-07551},
      pages        = {8933–8946},
      year         = {2015},
      abstract     = {In this work we present a combined analysis of small-angle
                      neutron scattering, linear rheology and pulsed field
                      gradient nuclear magnetic resonance spectroscopy experiments
                      on the supramolecular association and chain structure of
                      well-defined telechelically modified poly(ethylene glycol)
                      (PEG) in the bulk. Oligomeric PEG was functionalized with
                      directed heterocomplementary hydrogen-bonding end-groups,
                      thymine (Thy) and diaminotriazine (DAT). The polarity of the
                      backbone polymer is comparable to the end groups and avoids
                      clustering of the groups basing on energetic arguments.
                      Their linear association behavior in the ideal melt state
                      was investigated on the microscopic/molecular level as a
                      function of temperature. By means of a selective labeling
                      scheme, which should ideally lead to the formation of
                      alternating hydrogeneous-deuterated building block sequences
                      if the hydrogen bonding reaction is exclusively
                      heterocomplementary, we showed that the Thy–DAT
                      association is dominant and a Thy–Thy homoassociation is
                      approximately three times less probable. Latter nondirected
                      association gives rise to a considerable amount of
                      random-copolymerization without affecting seriously neither
                      the macroscopic melt viscosity nor the diffusivity of the
                      supramolecular associates. From the q-dependence of a
                      multiblock RPA structure factor, the linear association in
                      the melt is confirmed. Furthermore, this diffusion and
                      viscosity study reveals simple Rouse dynamics of
                      supramolecular polymer chains with molecular weight much
                      larger than the entanglement mass Me. The Rouse-like
                      dynamics of long supramolecular chains indicates short
                      lifetime hydrogen bonds of the end groups. Our results are
                      in excellent agreement with the related polycondensation
                      theory.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1 / JCNS (München) ;
                      Jülich Centre for Neutron Science JCNS (München) ;
                      JCNS-FRM-II},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-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:000367279500028},
      doi          = {10.1021/acs.macromol.5b02060},
      url          = {https://juser.fz-juelich.de/record/279669},
}