A Universal Approach for the Self‐Assembly of Hydrophilic Nanoparticles into Ordered Monolayer Films at a Toluene/Water Interface

Making films: Removal of most of the toluene from a two-phase toluene/water mixture causes nanoparticles present at the liquid–liquid interface to pack closely together in an ordered monolayer film (MLF). This MLF can be removed from the interface for further study.