Facile fabrication of porous pure and Ag nanoparticle-doped poly（4-vinylpyridine） films at the liquid-liquid interfaces

We reported an interfacial self-assembly of regularly layered porous poly（4-vinylpyridine） （P4VP） films at the interfaces of water-chloroform or -dichloroethane. The porous diameters were in the range from hundred nanometers to several micrometers. It was revealed that formation of such kind of porous materials was solvent dependent. Moreover, cyclic Ag nanoparticles could be grown in the porous P4VP films to form Ag-P4VP nanohybrids under radiation.