Directing Self-Assembly of Nanoparticles at Water/Oil Interfaces


  • This work is supported by the Max Planck Society. We thank J. Hartmann and R. Pitschke for assistance with the TEM measurements.


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Finding the right angle: The contact angle of nanoparticles at the water/oil interface can be engineered close to 90° by capping with ligands containing carboxylic ester terminal groups. This drives the nanoparticles to self-assemble into close-packed films (see picture), and thus provides the opportunity to create two- or three-dimensional homo- or heterogeneous nanostructures for electronic, optoelectrical, and magnetic applications.