% 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{Li:12063,
      author       = {Li, X. and Zamponi, M. and Hong, K. and Porcar, L. and
                      Shew, C.-Y. and Jenkins, T. and Liu, E. and Smith, G.S. and
                      Herwig, K.W. and Liu, Y. and Chen, W.-R.},
      title        = {p{H} {R}esponsiveness of {P}olyelectrolyte {D}endrimers:
                      {A} {D}ynamical {P}erspective},
      journal      = {Soft matter},
      volume       = {7},
      issn         = {1744-683X},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry (RSC)},
      reportid     = {PreJuSER-12063},
      pages        = {618 - 622},
      year         = {2011},
      note         = {This research at Oak Ridge National Laboratory's SNS was
                      sponsored by the Scientific User Facilities Division, Office
                      of Basic Energy Sciences, U.S. Department of Energy. CNMS is
                      sponsored at ORNL by the Division of Scientific User
                      Facilities, U.S. Department of Energy.},
      abstract     = {A combined quasi-elastic neutron scattering (QENS) and
                      high-resolution solution NMR spectroscopy study was
                      conducted to investigate the internal dynamics of aqueous
                      (D2O) G5 PAMAM dendrimer solutions as a function of
                      molecular protonation at room temperature. Localized motion
                      of the dendrimer segments was clearly exhibited in the QENS
                      data analysis while the global, center-of-mass translational
                      diffusion was measured by NMR. Our results unambiguously
                      demonstrate an increased rapidity in local scale (similar to
                      3 angstrom) motion upon increasing the molecular
                      protonation. This is contrary to an intuitive picture that
                      increased charge stiffens the dendrimer segments thereby
                      inhibiting local motion. These charge-induced changes may be
                      a result of interactions with the surrounding counterions
                      and water molecules as the segments explore additional
                      intra-dendrimer volume made available by slight
                      electrostatic swelling and redistribution of mass in the
                      dendrimer interior. This observation is relevant to
                      development of a microscopic picture of dendrimer-based
                      packages as guest-molecule delivery vehicles because
                      reorganization of the confining dendrimer segments must be a
                      precursor to guest-molecule release.},
      keywords     = {J (WoSType)},
      cin          = {PGI-4 / ICS-1 / Jülich Centre for Neutron Science JCNS
                      (JCNS) ; JCNS},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-4-20110106 / I:(DE-Juel1)ICS-1-20110106 /
                      I:(DE-Juel1)JCNS-20121112},
      pnm          = {BioSoft: Makromolekulare Systeme und biologische
                      Informationsverarbeitung / Großgeräte für die Forschung
                      mit Photonen, Neutronen und Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
      shelfmark    = {Chemistry, Physical / Materials Science, Multidisciplinary
                      / Physics, Multidisciplinary / Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000286110900038},
      doi          = {10.1039/c0sm00671h},
      url          = {https://juser.fz-juelich.de/record/12063},
}