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@ARTICLE{Hess:874181,
      author       = {Hess, Melissa and Roeben, Eric and Habicht, Axel and
                      Seiffert, Sebastian and Schmidt, Annette M.},
      title        = {{L}ocal dynamics in supramolecular polymer networks probed
                      by magnetic particle nanorheology},
      journal      = {Soft matter},
      volume       = {15},
      number       = {5},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2020-01281},
      pages        = {842 - 850},
      year         = {2019},
      abstract     = {Transient supramolecular polymer networks are promising
                      candidates as soft self-healing or stimuli-sensitive
                      materials. In this paper, we employ a novel nanorheological
                      approach, magnetic particle nanorheology (MPN), in order to
                      better understand the local dynamic properties of model
                      supramolecular networks from a molecular point of view.
                      Hence, the bond strength between four-arm star-shaped
                      polyethylene glycol (PEG) functionalized at the four
                      extremities with terpyridine ligands is tuned by
                      implementing different metal ions with variable complexation
                      affinities for the ligand. We show that MNP allows for the
                      evaluation of the strength and connectivity of the polymer
                      networks by the estimation of relaxation times, mesh size,
                      and also the viscoelastic properties of these materials.
                      These results are compared and complemented to former
                      outcomes on these systems that were obtained by macroscopic
                      analytical methods. A clear dependence between the strength
                      of the metal–ligand complex and the local dynamics of the
                      polymeric network is observed by the nanorheological
                      approach, which is in good agreement with previous
                      predictions related to the complex formation constants.},
      cin          = {ICS-2 / IHRS-BioSoft},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-2-20110106 /
                      I:(DE-Juel1)IHRS-BioSoft-20161118},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      IHRS-BioSoft - International Helmholtz Research School of
                      Biophysics and Soft Matter (IHRS-BioSoft-20061101)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-Juel1)IHRS-BioSoft-20061101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:30608500},
      UT           = {WOS:000457540000023},
      doi          = {10.1039/C8SM01802B},
      url          = {https://juser.fz-juelich.de/record/874181},
}