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@ARTICLE{Akdas:811115,
      author       = {Akdas, Tugce and Distaso, Monica and Kuhri, Susanne and
                      Winter, Benjamin and Birajdar, Balaji and Spiecker, Erdmann
                      and Guldi, Dirk M. and Peukert, Wolfgang},
      title        = {{T}he effects of post-processing on the surface and the
                      optical properties of copper indium sulfide quantum dots},
      journal      = {Journal of colloid and interface science},
      volume       = {445},
      issn         = {0021-9797},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2016-03638},
      pages        = {337 - 347},
      year         = {2015},
      abstract     = {In the current contribution we report on investigations
                      regarding the surface of CuInS2 quantum dots andon different
                      strategies to control the amount of surface ligands in a
                      post-processing step. In particular, thereactivity of the
                      organic components, that is, 1-dodecanthiol and 1-octadecene
                      as ligand and solvent,respectively, during nanocrystal
                      formation was studied. A new method to remove residuals from
                      thereaction mixture and to detach excess organics from the
                      surface of the nanocrystals is reported. Ournew method,
                      which is based on the utilization of acids, is compared with
                      standard purification proceduresby means of
                      thermogravimetric analysis (TGA) with particular focus on
                      its efficiency to removeorganics. As a complement, the
                      surface chemistry is analyzed by nuclear magnetic resonance
                      spectroscopy(NMR) to shed light on the nature of the organic
                      components still present after purification. Furtheranalysis
                      of the product by inductively coupled plasma optical
                      emission spectroscopy (ICP-OES) is performedto verify the
                      influence of the new purification method on surface
                      composition and properties.Moreover, steady state and time
                      resolved spectroscopies give insights into excitonic
                      behavior as wellas recombination processes. Finally, the new
                      method is optimized for the purification of
                      CuInS2–ZnSnanocrystals, which show enhanced optical
                      properties},
      cin          = {IEK-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-3-20101013},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000350006700041},
      doi          = {10.1016/j.jcis.2015.01.014},
      url          = {https://juser.fz-juelich.de/record/811115},
}