Janus Particle Preparation through UV-Induced Partial Photodegradation of Spin-Coated Particle Films

Janus particles contain two or more chemical properties typically on opposing faces. With various property combinations possible, there are several potential applications, such as surfactants and drug delivery. However, scaling up the particle production process at reasonable cost is a limiting factor, method reported here aims to circumvent this issue. The based top-down destructive strategy that consists of steps. Photocatalytic titanium dioxide prefunctionalized with surface coating were assembled films via spin-coating substrate. placed directly under an ultraviolet light source, which induced photodegradation only surfaces exposed light. generated amphiphobic–amphiphilic in character. had theoretical balance close ideal remained attached hexane/water interface after disruption. They able make Pickering emulsions water silicone oil low energy input. may be easily scaled facilitate gram-scale yields. use UV clean efficient can applied semiconductor coatings susceptible photodegradation, making highly versatile.