Amphiphilic modification and asymmetric silica encapsulation of hydrophobic Au–Fe3O4 dumbbell nanoparticles†
Abstract
A facile method is developed for amphiphilic surface modification and asymmetric silica encapsulation of hydrophobic Au–Fe3O4 dumbbell nanoparticles. The obtained asymmetric Janus nanocomposites display tunable wettability, enhanced catalysis and better cell internalization as compared to those with complete silica encapsulation.