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@ARTICLE{Grasmik:858607,
      author       = {Grasmik, Viktoria and Breisch, Marina and Loza, Kateryna
                      and Heggen, Marc and Köller, Manfred and Sengstock,
                      Christina and Epple, Matthias},
      title        = {{S}ynthesis and biological characterization of alloyed
                      silver–platinum nanoparticles: from compact core–shell
                      nanoparticles to hollow nanoalloys},
      journal      = {RSC Advances},
      volume       = {8},
      number       = {67},
      issn         = {2046-2069},
      address      = {London},
      publisher    = {RSC Publishing},
      reportid     = {FZJ-2018-07467},
      pages        = {38582 - 38590},
      year         = {2018},
      abstract     = {Bimetallic nanoparticles consisting of silver and platinum
                      were prepared by a modified seeded-growth process in water
                      in the full composition range in steps of 10 $mol\%.$ The
                      particles had diameters between 15–25 nm as determined by
                      disc centrifugal sedimentation (DCS) and transmission
                      electron microscopy (TEM). Whereas particles with high
                      platinum content were mostly spherical with a solid silver
                      core/platinum shell structure, mostly hollow alloyed
                      nanoparticles were observed with increasing silver content.
                      The internal structure and the elemental distribution within
                      the particles were elucidated by high-resolution
                      transmission electron microscopy (HRTEM) in combination with
                      energy-dispersive X-ray spectroscopy (EDX). The particles
                      were cytotoxic for human mesenchymal stem cells (hMSC) above
                      50 $mol\%$ silver. This was explained by dissolution
                      experiments where silver was only released at and above 50
                      $mol\%$ silver. In contrast, platinum-rich particles (less
                      than 50 $mol\%$ silver) did not release any silver ions.
                      This indicates that the presence of platinum inhibits the
                      oxidative dissolution of silver.},
      cin          = {PGI-5},
      ddc          = {540},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000451075500051},
      doi          = {10.1039/C8RA06461J},
      url          = {https://juser.fz-juelich.de/record/858607},
}