Macromol. Chem. Phys. 21/2015

Front Cover: The size-dependent pairing between an-isotropic multimaterial nanoparticles is demonstrated. The association is provided by the spontaneous assembly of Janus nanoparticles upon addition of a silica precursor. A face-selective silica coating on the surface of the Janus particles induces a morphology change, which then mediates the irreversible size-dependent pairing of the particles. Further details can be found in the article by D. Estupiñán, M. B. Bannwarth,* K. Landfester, and D. Crespy* on page 2070.