Janus nanosheets of polymer–inorganic layered composites are fabricated by crushing the
corresponding Janus composite hollow spheres, which are synthesized by materialization of
an amphiphilic emulsion interface with self-organized sol–gel process and subsequent
polymer grafting onto the lipophilic side. The Janus composite nanosheets serve as solid
surfactants to stabilize emulsion droplets, which are tolerant against solvents. Janus balance
of the composite nanosheets is tunable crossing from more lipophilic to hydrophilic by …