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@ARTICLE{Zhang:4078,
      author       = {Zhang, Z. and Krishna, N. and Lettinga, M. P. and Vermant,
                      J. and Grelet, E.},
      title        = {{R}eversible gelation of rod-like viruses grafted with
                      thermoresponsive polymers},
      journal      = {Langmuir},
      volume       = {25},
      issn         = {0743-7463},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {PreJuSER-4078},
      pages        = {2437 - 2442},
      year         = {2009},
      note         = {This work was supported by the European network of
                      excellence-SoftComp. The EU is also acknowledged for funding
                      through Nanodirect FP7-NMP-2007-SMALL-1, project 213948. We
                      also thank Sabine Willbold for performing NMR measurement
                      and Johan Buitenhuis for useful discussion. Jan K. Dhont is
                      acknowledged for stimulating discussions and for his reading
                      of the manuscript.},
      abstract     = {The synthesis and selected macroscopic properties of a new
                      model system consisting of poly(N-isopropylacrylamide)
                      (PNIPAM)-coated rod-like fd virus particles are presented.
                      The sticky rod-like colloids can be used to study effect of
                      particle shape on gelation transition, the structure and
                      viscoelasticity of isotropic and nematic gels, and to make
                      both open isotropic as well as ordered nematic particle
                      networks. This model system of rod-like colloids, for which
                      the strength of attraction between the particles is tunable,
                      is obtained by chemically grafting highly monodisperse
                      rod-like fd virus particles with thermoresponsive polymers,
                      e.g. PNIPAM. At room temperature, suspensions of the
                      resulting hybrid PNIPAM-fd are fluid sols which are in
                      isotropic or liquid crystalline phases, depending on the
                      particle concentration and ionic strength. During
                      heating/cooling, the suspensions change reversibly between
                      sol and gel state near a critical temperature of
                      approximately 32 degrees C, close to the lower critical
                      solution temperature of free PNIPAM. The so-called nematic
                      gel, which exhibits a cholesteric feature, can therefore be
                      easily obtained. The gelation behavior of PNIPAM-fd system
                      and the structure of the nematic gel have been characterized
                      by rheology, optical microscopy and small-angle X-ray
                      scattering.},
      keywords     = {Acrylamides: chemistry / Gelatin: chemistry / Gels:
                      chemistry / Liquid Crystals: chemistry / Molecular Structure
                      / Phase Transition / Polymers: chemistry / Temperature /
                      Viruses: chemistry / Acrylamides (NLM Chemicals) / Gels (NLM
                      Chemicals) / Polymers (NLM Chemicals) /
                      poly(N-isopropylacrylamide) (NLM Chemicals) / Gelatin (NLM
                      Chemicals) / J (WoSType)},
      cin          = {IFF-7},
      ddc          = {670},
      cid          = {I:(DE-Juel1)VDB787},
      pnm          = {Kondensierte Materie / NANODIRECT - Toolbox for Directed
                      and Controlled Self-Assembly of nano-Colloids (213948)},
      pid          = {G:(DE-Juel1)FUEK414 / G:(EU-Grant)213948},
      shelfmark    = {Chemistry, Multidisciplinary / Chemistry, Physical /
                      Materials Science, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19166277},
      UT           = {WOS:000263373600078},
      doi          = {10.1021/la8029903},
      url          = {https://juser.fz-juelich.de/record/4078},
}