Nanocomposites combine the interesting properties of nanoparticles and the good processing properties of polymers. Usually nanoparticles and polymers are immiscible, to overcome this obstacle we developed a ligand exchange method. With this method it is possible to graft a brush-like polymer layer on the particles which alters the enthalpic and entropic interactions to enhance the miscibility in a polymer matrix. The polymer brush can be so dense that the brush thickness is directly correlated to the polymer length, up to several nm, which translates to the interparticle distance.



  • S. Ehlert, S. Mehdizadeh Taheri, D. Pirner, M. Drechsler, H. Schmidt and S. Förster
    Polymer Ligand Exchange to Control Stabilization and Compatibilization of Nanocrystals
    ACS Nano 2014,8,6114.
  • S. Ehlert, C. Stegelmeier, D. Pirner, and S. Förster
    A General Route to Optically Transparent Highly Filled PolymerNanocomposites
    Macromolecules 2015,48,5323


Sascha Ehlert

Phone: +49 2461 61-85752

Last Modified: 24.05.2022