“…In the past decades, synthesis of polymer nanocapsules of active substance or hollow polymer nanoparticles has received tremendous attentions due to their potential applications in many emerging fields like drug delivery,1 dye encapsulation,2 catalysis,3 and biomaterial sensor 4. Many kinds of polymers such as polyelectrolytes,5, 6 polystyrene,7–9 poly(butyl acrylate),10 poly( L ‐lactide), polycaprolactone/poly(ethylene oxide) block copolymers,11 and polyethylcyanoacrylate12 were used as polymer shell of nanocapsules for entrapping different materials in core. Due to the strongest C–F single bonds among organic molecules, low polarity, and good coverage of polymer main carbon chains, fluorinated polymers show many unique properties like low refractive index, high oxygen and CO 2 permeation, low surface energy, water and oil repellence, chemical and thermal stability 13–15.…”